Actually, if I could have, I would have voted for lexicography as my favorite, but it wasn't an option in the challenge. There isn't much opportunity to study it in the U.S. There is a course here and there - e.g. Univ. of Georgia, Univ. of South Dakota - and England has some courses, in a degree program or just as training. But there are organizations and societies. Check out the Dictionary Society of North America, meeting next year in Montreal. Euralex is meeting this year in Leeuwarden, the Netherlands, July 6-10. And the Fifth International Conference on Historical Lexicography and Lexicology will be held at St Anne's College, Oxford, 16-18 June 2010; the conference will mark the tenth anniversary of OED Online.
You can trace the words newly entered or newly revised in the Oxford English Dictionary under the Quarterly Updates - revisions and new words. Notes on OED's December 2009 release of new words (there should be another update this month) tells us, for example, that one of the words just entered is blogosphere - it even tells us why it was added to the Dictionary.
For us, it's all about the words.