SemTech 2011 – London/Washington, D.C.
Washington, D.C. November 29 – December 1, 2011
Apparently a common deadline for proposals of Monday, May 2, 2011.
Interesting range of semantic web, linked data, text analysis, data/content management, etc.
I suppose the real question is balancing the hassle of U.K. airport security against the odds of nasty weather in D.C.
Since both are virtually certain, it may come down to which one is more cost effective and convenient.