Hallo,
You do realise that layer=-1 means the water flows underground?
Also, where it is mapped above-ground, I can see a place between the trees that the fact there is a stream is clear.
If the data from the previous mapper was inaccurate, that would be because it is sourced from USGS, but at the end where it empties into the ... um ... lake but not water-as-I-know-it (in the clearest imagery), it is quite visible there.
Just wanted to point that out in this difficult mapping area.

Hallo Moor1,
Thank you for moving the buildings you moved in this changeset to positions matched by Mapbox aerial imagery!
I was worried when I saw the 3-D glasses effect of your changes, but I see you are going the riight way, and not the opposite.
Good work!

Hallo Lorajt,
Have all these trees been cut down or otherwise uprooted?
Your comment `too cluttered' implies you are seeing a rendering problem, because this does not seem at all cluttered to me.
You have also destroyed the work of another mapper for whom there was a reason to add this detail, assuming factual.
Note that OSM will continue to get more cluttered in time. In fact this area looks totally barren to me compared to the areas near me that are mapped in far more detail.
thanks

Hello Jelly Baby,
Do You like candy? I have some Jelly Beans I would like to offer you.
Would you like a lollipop?
Can I visit you at these school grounds?
You can recognise me by the raincoat and the electronic tether that keeps me far away from all mapped school grounds.
HUGS and BIG wet sloppy kisses XOXOX
Your best pal,
Chester

Thank you kindest Freedum Fighter!
As a convicted serial peadophile, I am overjoyed that once again I am free to enjoy and play with all the little kiddies that were off-limits to me as my electronic tether will not allow me within 500 metres of any school grounds mapped on OSM.
I am going to take advantage of these new opportunities to the max!
Maybe I will make national news again!
It is wonderful to see there are still some out there who care for the INalienable rights of us child molesters, and I am eternally grateful and would LUV to show you my DEEPEST appreciation in person!
Your service to the NAMBLA community will not go unnoticed.
Thanks
Chester

Hello again,
can you tell me when the tennis courts were removed?
I would like to date the aerial imageries that are available, which all show them, but also most of them seem to be years out of date.
This will also explain why a badly-drawn building cannot be seen on the imagery
thanks

Hello,
Can you explain why you have undone the work of mapper Constable here, a member of the community whose extensive work I generally respect, in response to what turned out to be a Pokemon mapper's requests to add the missing walkways?
tnanks

Hi,
Could you explain why you removed these footpaths, that I can see are mostly present in the available aerial imageries?
I know there have been a lot of changes in this area like flooding and parks, but at present the map shoes no detail of how to get from building to building.
thanks.

Hallo,
Unfortunately your changes here that you call simplifying, make things much less accurate, and far more difficult for other mappers to maintain.
You have joined an area that previously was marked in nice detail, the park boundary, to the road, which is not an area, but a schematic line, thus inaccurately representing the park boundaries.
This also means any changes or fixes to the road will have to detach the park, which is not so trivial, and is enough to put me off.
Just thought I would let you know. If you liked the previous accurate boundary by the road, I would be happy to restore that for you without losing your other changes. Or you can leave it as it is now, I really do not care, but I just thought I would mention the effects of what you have done here.
Thanks

Hi,
if this hasn't yet been fixed, would you want me to revert the problem changeset?
There seem to be six or so missing nodes in the incomplete one.

No, you haven't yet -- I'll put its original name, ``Kein Pokemon Vanderlismus du Lapen'' back on to match the `Willkommen zu' signs at each entrance

This does not look like a Park, but the grass lawn of an apartment complex with perhaps a playground in the centre.
It looks very much like Vanderlismus to me.
I have not found any search results for `Sidlung Ruhrfeld Park', verrrry strange

Hallo Vet,
I have just opened a challenge bug-report as
note/1292856
in Mexico which only took me less than a minute to find :-)
I am sure that you - or anyone around the world who can understand english and knows the OSM guidelines we are discussing here, can edit there 100% without any problems.
There are many, many ways to contribute to OSM from afar, that are just as good as being local.
Feel free to try this if you like. The world is a big place, and OSM gives you the chance to explore it and contribute without being there or knowing about it.
Thanks for your fixes!

Hallo Jerome,
You may want to add the access walkways as well. These are on the north side, partly in shadow, in the clearest Mapbox imagery.
ESRI Clarity shows them better, if not so sharp. Be sure to mark them as bridges where needed.
I believe I can see the pillars extending a ways into the water, bit it looks that the west side of the drawn water does not accurately follow the outline of the buildings where vegetation can be seen tightly hugging the building outlines.
Nice first contribution!

Narri narro desull, Georg,
Actually, it can be seen *very* clearly in the USGS large scale imagery, which is probably very old, but taken at a time it was full of water.
In the Mapbox imagery, it appears drawn too large, but there are several things at play -- there is a several metre offset in the Bing/DG imagery from the buildings, and the pond is probably full of muck and plants at that time. Maybe it's intermittent, or more wetlands now?
The pond should drain into a stream heading north fairly steeply, which is why Bing/DG aerials have such an offset here.
In any case, desull, thank you for such an easily-proved factual addition, welcome to OSM, and I hope you add more missing things around your area. And also thanks for keeping civil about the interrogation we force upon all new victims, you probably know why we want proof of these contributions. ;-)

Hi, thanks for the long and detailed response, letting us get to know you.
OSM is not just a mapping project, not just a free database, but is in the process forming a community (of freaks ;-). These conversations are open, as is all the work you do, so if others can benefit from my pointless ramblings, printing them out to line birdcages or something, then all the better.
I'll throw out this URL so you can see how an isolated part of the world not terribly far away from you appears:
osm.org/#map=18/34.16021/-117.41181&layers=N
It has its problems of course, just like
osm.org/#map=17/55.83289/38.18332&layers=N
which is a bit further away, yet still interesting.
And of course Disney World, which may look great on the screen but is useless for data consumers wanting to do routing.
.
There are some issues with everything in this particular changeset of yours, which I'll address later in a followup.
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OSM is, indeed, still in its perpetual infancy. The US is perhaps in general five to ten years behind the first places to get the sort of detail I take for granted, which I saw going from vast empty space to detailed vegetation mapping.
Your interests are logical; my interest in obtaining the OSM data to put on a cast-off Garmin was to fill out point amenities like drinking water, WCs, and selected shops, things useful to someone cycling for 16 or more hours a day.
.

But for now, I took a closer look at what you had done and what data was nearby, and that can be seen at
node/1419027496#map=19/38.72970/-121.25610&layers=ND
where everything, and not just what PoGo chooses to show you can be seen.
The particular invisible node I highlighted is a cable distribution box, added by the same mapper whose driveways seemed superfluous to you, and I thought to meself, `self, perhaps this is a mapper for a cable plant who also maps minor details applicable, such as drives to represent each residence served by that particular cable distribution point.'
Of course that's not true, but it's a potential use of OSM just as in europe many governments or public transport systems, even businesses (much like Wal*Mart nearer to you) are using OSM as a repository for their data for the public.
PoGo is, for a bit over a year now, just one of the more recent entities who can save a penny by using the OSM data, and sadly the most disruptive, as they do not offer what I describe as a service (like Red Cross rescues in difficult terrain) for the public, but rather entertainment with personal benefits that is too easy to game the system to cheat in ways that very negatively affect the thousands of other users.
I can see a lot of good coming from the flood of players. There are several new members whose usernames caught my eye at the time, but recently I was pleasantly surprised to notice one of them as one of the top contributors with several thousand items to her/his name one random day, then soon after happened to randomly stumble upon some of those contributions at an area I was investigating. Work well done.
The problem is that OSM is still in baby shoes in the US and many other parts of the world with a PoGo player population, so those contributions stand out and are easily identified but there just aren't enough eyeballs yet to offer the sort of help I'm happy to give you, that I know won't go to waste.
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There are a lot more than just the two cases of vandalism you refer to. Generally we OSMlers may call vandalism any deliberately false data, and not just the sort of spray-painting that has always been background noise in OSM, where someone would carefully draw a tree-row, outline it with elaborate shrubbery, add a few small ponds, and upload that to OSM with description ``HAW HAW PEANUS''.
The particular vandalism you name was not just `DADDY' atop of houses, but rather that five detailed houses with building details were demolished, in their place a park was founded with a couple amenities, and between all the Do Not Tread On The Grass areas were isolated footpaths forming letters on which any park visitor would be stranded, unable to be routed back to safety.
The obvious clues it was Pokemon-related are the priority on parks and footpaths. That it took two weeks and an anonymous tipoff (whom I think I can thank as a distinguished part of the community) speaks poorly on the penetration of OSM into the general public at present, and the lack of eyeballs to spot that sort of thing over such a vast country.
The second similar case I'm aware of is where a government car park was flooded -- another tell-tale giveaway. That one was caught quicker, but also demonstrates the level of trust shown new users as well as trust in the community to deal with such issues.
There are countless other cases I've seen, for example if the schoolgrounds southwest of your work here were repeatedly deleted, or military bases removed from the map.
Luckily some days ago a change was made to PoGo so that military is no longer a problem, but the issue that caused you to delete the service drives, or in other places they get changed incorrectly into footpaths, still needs addressing by Niantic, as the fact you can see them (at all) is their issue.
It would also be nice if streams were to be recognised also, as now with water items featuring prominently in PoGo, there is a falsification of data where streams are turned into rivers, deviating from the OSM truth.
So yeah, someone could write a thesis on how PoGo is influencing OSM, more than just our back-and-forth here.
Probably to be entitled `OSM v. Human Nature: Battle of the Titans' with an anime feature to follow (anna *wicked* soundtrack!).
.
Niantic is totally unrelated to OSM except that they suck up the data and base their game on it, and no longer have to pay Google for the maps and data. They probably could not be bothered what happens to OSM, it falls upon the OSM community to defend itself and its principles (the truth, the whole world is not a park and your mother is not a historic monument), and for the PoGo community to police itself against the abusers, cheaters, those who want to bend the truth for their own benefit by turning their home into a park rather than as originally intended, get outside and active to go to the places with the rewards PoGo players strive for.
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Whew. Sorry for sounding like your grampaw thar. That should keep a lot of fish wrapped up as well as litter the streets of this Carneval time (narri, narro, alaaf, hellau, and all that, which reminds me, gotta get outside and act like a fool in public, not just for OSM)
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More on the technical issues to follow.

This changeset has been reverted fully or in part by changeset/56149740 where the changeset comment is: mistaken v1 copy of existing multi-way/node trail onto somewhere completely different

Hi,
I commented in note/1287740 that it seems from the surface it should be a simple revert.
I'll give it a quick analysis and wipe it off the map for you if my brane feels functional.

One can trivially go from, say, Avenida to Ave. But how do you know if Pl should be expanded to Platz, Plaza, Playa, or if Tr is Trail or Trace? St for Straße (yeah, I know, Str.), Strada, Street? And lots more. Like, is E the letter E in a series A-N, or short for East?
There are many more languages where a common abbreviation (Ul.) gets expanded to different things, just as there are many more possibilities the above examples could be expanded into.
Hope that gives you the perspective to understand!

A swimming pool would almost certainly be in the back yard, not in full view of the road and passing pedestrians.
This area is a front yard with more tree cover than others nearby, so it could be a small landscape garden with an artificial lily pond, if it exists, it is difficult to say.
However, without any of the nearby buildings being marked, or any housenumbers, it looks a strange and lonely addition, rather than forming part of an ensemble.
Proof of this would have to be a ground-level photo of the front lawnyard.
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That said, I see some strange looking turning circles nearby, covering a wide area, that appear to be mapped as traffic signals in error.