Each of CloudMade’s custom stylesheets applies globally, just like the stylesheet OSM uses. So it’s not as though CloudMade can render one part of the world using one stylesheet and automatically switch to something else. Perhaps OSM could render three versions of every tile (sparse, medium, and dense population) and offer a stylesheet chooser, but I think just that would require lots more resources.

Wouldn’t it be great if there were a Magic Wand tool in Potlatch, with a tolerance setting, like the one in Photoshop or the GIMP? Then you could just click on a bright spot and Potlatch would find the building’s sides. One can dream…

How about spelling out “YAHOO!’S WRONG” using a series of tagless POIs? ;^)

You can subscribe to this feed, which notifies you whenever the map’s stylesheet is changed. Even if you can’t read XML, you can see the specific tags and values being used by the renderer. I suppose this feed isn’t well-publicized because it would definitely lead to “tagging for the renderer”, but I use it to prioritize when mapping.

Well a presenter at the State of the Map conference also said it’s public domain. You’re probably right, but you know how OSM likes to be extra sure about copyright.

Best not to rely on hearsay when it comes to legal issues.

According to this document, at least their 1:250.000-scale digital maps and county-level census data are public domain. There may be more, but it’s best to look around on the Internet for information about it. I don’t know Portuguese, so unfortunately I can’t search for the law you’re referring to.

The U.S. state of Georgia is landuse taken to the extreme. They’ve also imported address interpolation lines throughout. If I ever have to map there using Potlatch, I’ll have to zoom in all the way or my poor Internet connection will fall over.

I aim to map individual farms in my area, but if we’re going to do something that specific at a large scale, we should instead consider starting an OpenSatelliteMap project to send a satellite up. :^)

fsteggink, select a node, then press / until the street you want is on top.

See that “English” link at the bottom of your post? That at least filters out all the other languages.

ITO World’s free OSM Mapper service might have the kind of filtering you want, but it sometimes lags behind a few days at a time.

The best I can come up with is adding tunnel=yes wherever the road dips into the cliffside, and maybe tunnel=yes and area=yes (just in case) on any “covered” buildings. But I’m pretty sure none of the renderers do anything special with “tunnel buildings”.

OSM needs another tag for national park areas. At least in the U.S., national parks aren’t just reserves; they’re in large part recreational areas. So not only is this usage aesthetically poor, it’s semantically incorrect.

So does OSM Know the Way to San Jose yet?

amenity=light would be consistent with amenity=bench, but you’re really getting into unmapped territory here. :^)

While you’re fixing up the interstates in the Cleveland area, please consider adding relations on the interstates (details at the Ohio wiki page).

By way of introduction, I tend to work on Cincinnati and Southwest Ohio and Vid the Kid works on the central part of the state.

In case you haven’t seen it yet, OpenCycleMap uses OpenStreetMap data (updated once a week) and looks rather nice.

osm.xml, the file that determines how Mapnik renders the map, has a provision for amenity=place_of_worship on an area, but I really don’t like how place-of-worship areas get colored a dark gray.

Perhaps you could try adding note=Yahoo! is out of date here. or something like that.

Ah, come to think of it, a combination of barrier=bollard and highway=pedestrian (instead of highway=residential) would work better.

motorcar=no should help with routers.

Was it a way (for instance, the tracks leading to the station) or a point of interest (on the station itself)? The tracks would’ve come from TIGER, while the POIs were mostly imported from the GNIS, which contains both historical and current landmarks. Many of the historical landmarks have “(historic)” in their names, but I’ve spotted quite a few points in my area that are simply out of date – especially post offices.