Satellite activity was noted during past RaDAR contests but there was no activity during the recent April 2013 contest.
An advantage in using this technology is that some planning ahead can be done knowing pass times and passes relative to position. All that is required is someone also active via a satellite link. Five bonus points are also awarded for the first contact!
Satellites that are still active are the old faithful AO-7, FO-29, SO-50 and VO-52. Satellite communications should be constantly promoted and newcomers introduced to this wonderful scientific way of communicating via amateur radio.