I’ve set up an experimental noname layer at http://qa.poole.ch/ .

It differs a bit from previous attempts in that it respects noname and unsigned tags (that have never become popular) and is generated directly from a synchronized database. Currently changes can be expected to show up in roughly 5 minutes.

Legend:

• red: major and minor roads, service with service=alley without name or ref tag
• orange: unspecified service, unnamed roundabouts, motorway_link, trunk_link
• dashed red: unsigned=yes
• dashed orange: unsigned=yes and/or noname=yes

update 28th October 2012

• render motorway_link and trunk_link in orange. There is currently no clear way to tag such roads in the absence of explicit sign posting.
• reduce line widths at lower zooms

update 16th November 2012

• render *_link in orange.
• support validate:no_name=yes as synonym for noname=yes and validate:no_name=no_sign as synonym for unsigned=yes
• note: only zoom levels 0-9 will be automatically re-rendered

update 26th November 2012

• support name:left amd name:right as valid name tags
• note: only zoom levels 0-9 will be automatically re-rendered

… See full entry

I've added a short and somewhat incomplete review of the ContourGPS to my wiki user page: osm.wiki/User:SimonPoole#Video_Mapping_with_the_ContourGPS_Helmet_Camera