TheCheese33: I think publishers are very interested, given the heavy-hitters we've gotten so far.
Given the Ars Technica interview, where it's noted publishers are afraid to let go of copy protection even on decade old titles, it would seem they're not as keen on the idea of GOG as they should be, unfortunately.
A pretty large percentage of those heavy-hitters are from Interplay, and their interest is understandable, given that they're struggling to stay in business and possibly even make a comeback. In which case leveraging their strong back catalogue is an obvious choice.
As for new publishers, in case GOG people weren't just fooling around by adding a forum for
Unreal, we might be in for some very pleasant surprises.