The GeoDRM group is doing a survey on DRM. The press release is here:
<http://www.opengeospatial.org/press/?
page=pressrelease&year=0&prid=199>
You can access the survey direct at:
<http://www.surveymonkey.com/s.asp?u=53777639685>
(And yes it does list ODRL as one of the DRM technology standards!)
Cheers
Renato Iannella
http://renato.iannella.it