A few months ago LibrarianInBlack mentioned "7 Things You Should Know About..." It's a series of 2-page factsheets produced by the Educause Learning Intiative, on emerging technologies gaining traction in teaching and learning. The most recent topics are Wii, Second Life, Multi-Touch Interfaces, Ning, Google Apps, and Flickr -- pretty much a laundry list of libraryland buzzwords, if I'm not mistaken!
So keep "7 Things You Should Know About..." in mind for current awareness of new technologies. The factsheets handle basic questions about each subject, like what it is, how it works, where it is going, and why it matters to teaching and learning -- and at 2 pages, it's just the right size. Now if only they published an RSS feed...