Recently I came across wordspy_rss. It's a feed from http://www.wordspy.com/ - a website devoted to lexpionage, the sleuthing of new words and phrases. New words and terms are being coined all the time, this site searches out such words when they appear multiple times in newpapers, journals, books, or web, and posts them with an explanation of what they mean and an example of usage. It's really neat, and interesting (for me). New words that have recently appeared on the website: tunnel advertising, flying while Muslim, frienemy.
(I apologize if this has already been posted - I didn't see it.)