I know 2010 has just finished but could I recommend Edinburgh for 2011? voted above London and Paris by Tripadvisor and Conde nast as a destination and amongst the top ten cities in the world 2008 by Wanderlust.
Do we have another Scottish Wine hacker? :) I have suggested Edinburgh as a potential WineConf venue in the future, and would be happy to organise such a conference. Next year is I think currently planned to be Minnesota, however, as Michael explains.
Regards,