Nike is running a social-media based game on the streets of inner London on Friday - website is http://www.nikegrid.com/ The idea is to run from phonebox to phonebox, phoning in at each one to get points. An innovative, Web 2.0-take on street orienteering.
The dynamic maps they are using are black-and-white filtered Microsoft Virtual Earth aerial imagery, delivered via Flash, with appropriate credit and weblink to Bing. The static version of the maps is based on OSM data - but you wouldn't know without looking carefully, as there's absolutely no attribution on this derived work. Several printed, folded copies of the maps have also been left in each of the phoneboxes concerned.
It's such an awesome idea I feel kind of bad calling them out on this, but it would be nice if they credited the project. (I did contact them a couple of days ago, without success.) I'm in two minds really - should we be concerned if companies use our work without attribution? Quite a few people consider their edits to be public domain. Does it really matter?
Full measured grumble on my blog: http://blog.oobrien.com/2010/04/nike-grid/