Here's a talk I'd like to see: GeoDRM: Keeping Free and Remaining Open. An excerpt from the abstract:
One of the most important use cases involves assuring that free and open data in fact remain unencumbered, for example by liability or derivation claims.
The open data movement needs GeoDRM? To me, this is prima facie nonsense. I'm interested to find out what Jo and other open data advocates attending the conference take away from this talk.