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
personal productivity, life hacks, and simple ways to make your life a little better; check out "classics"; good for grad students who need to organize gettting through and out earning a real living
"reviewing and providing in-depth walkthroughs of today’s best products and services"; valuable because of plethora of new Web 2.0 software; explanation of how to use it gives clues as to if you would want to try new software.