links to knowledge sharing or knowledge management site; larger site is most comprehensive listing of web2.0 sites I have seen, organized into many categories; blogger is from Netherlands
another social bookmarking site to find books to read like the ones you know, in genres you prefer, enjoyed by other readers with your tastes; it's one of the fun features of Amazon.com, now with whole sites for the purpose
how to refine a topic and its searches; updated for web 2.0 and specialty searching; good for anyone starting to do Internet research on a topic and will take you to some previously unused search tools
Firefox extension offers an addictive way to search via categories or keywords or happenstance; you train it, with thumbs up or down on sites, so it learns your tastes; I prefer searches on keywords so far, and have had little desire to "network"
You sign up, enter the name of a book, then find out what other folks who liked that book also liked; a tag cloud for the book leads to other books on this topic. Quite addictive, and I just used it to look at the info. around one book.
CiteULike is a free service to help academics to share, store, and organise the academic papers they are reading. When you see a paper on the web that interests you, you can click one button and have it added to your personal library.