Well, with the back-up from major mobile companies, I think .mobi could be going strong. Just to update, .mobi is going for public registration starting 26/09/06 . Till then they are open for sunrise registration for those trademark and copyright owners. Detail at :- http://pc.mtld.mobi/switched/index.html

I have tried to register for some generic one word names, but they have been registered by others. So, Good Luck.