I could not find anywhere to report sites that appear to be using OSM data without proper attribution, and would have no idea how to handle the situation properly, so I’ll start the ball rolling with this one:
Would it be useful to have a sub-forum just for reports like this?
I guess I hadn’t zoomed in enough to notice that before. But yes, they appear to be using OSM data though I’m not familiar with the rendering style. And the data they are using is at least a month old based on my edits in my area. I don’t see an obvious way to notify them of their violation.
I have contacted them through their feedback form. Hopefully they will fix it up.
Also have a look at the OSM wiki about
http://wiki.openstreetmap.org/wiki/Lacking_proper_attribution