Link: http://www.survive2012.com/

Some ideas and analysis of what might happen.. along with his blog in which he tracks a lot of news and observations on 2012 related issues. His blog here.. http://survive2012.com/news/news.html

Link: http://2012forum.com/forum

Apparently a very active forum for the discussion of some of these topics.

Link: http://www.december212012.com/

Dec 2012.. is what some have it pegged. A little on the psychic glamour site for me, but they have pulled together a lot of different ideas and resources.

Link: http://www.greatdreams.com/2012.htm

Very interesting piece of work here, especially the parts integrating interpretations of the crop circles.

Link: http://www.instituteforhumancontinuity.org/#/home

Very pretty website. hehe [UPDATE] This is apparently a viral marketing concept for the upcoming 2012 movie. Trying to make this a blockbuster I guess.