A few Interesting Sites

I have been reading Academic Librarianship by Design by Steven J. Bell (The Blended Librarian) and John D. Shank. It's a great book about instructional design principals and collaboration with faculty in instruction. They make reference to some sites that I found useful. Some of you may already know these:

FURL (a site to collect, organize, and share bookmarks): http://www.furl.net/

Several repositories of digital learning materials:
MERLOT: http://merlot.org/
Wisconsin Online Resource Center: http://www.wisc-online.com/
LOLA Exchange: http://www.lolaexchange.org/
PRIMO: http://www.ala.org/apps/primo/public/search.cfm