For the best professional development this year, start twittering and get a strangle hold of your RSS feed/Reader. I find Google Reader the easiest. If you already have a gmail account, you are pretty much set.
Art Threat: a web magazine about politics and the arts. They write about political art of all genres, discuss policy as it pertains to culture, and showcase artists whose work inspires social change.
Better Posters: a resource for improving poster presentations.
Digital Ethnography: a Kansas State University working group led by Dr. Michael Wesch dedicated to exploring and extending the possibilities of digital ethnography.
eLeaning Infusion: some good information here especially if your considering using digital portfolios.