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 is out of date here.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.

One option is to map the landuse=wood surrounding the cleared area, leaving the power line’s “right-of-way” untouched. But it would look kind of odd unless you map a good deal of the surrounding woods.

I’ve never tried it, but this combination might make some sense: highway=track, surface=grass, area=yes. It’s akin to tagging town squares as highway=pedestrian, area=yes.

Richard, perhaps Potlatch could have an automated Mail Richard button, much like the Mail button on the history dialog. It could be prefilled with a specific error message. That’d make users more inclined to actually send the reports your way.

Yeah, I’ve been pretty paranoid about saving all the time the last few days, because I keep running into those issues. By the way, try opening another copy of Potlatch in a different tab or window, to see if the changes actually went through regardless.

To follow up, recently there’s been talk on the U.S. mailing list of using a :historic suffix after certain keys, since the recent GNIS import added countless numbers of historical churches and schools without proper tagging (but often with “(historic)” in the name).

Also, if I remember correctly, Yahoo! gave explicit permission to use their aerial imagery for OSM. That may be one complication with using Google Maps.