cNet highlights four Web 2.0 business collaboration tools: Blist online database (Seattle-base — check it out!), Cozimo for image and video collaborative annotation, LiquidPlanner for project management (my students recently used WetPaint, another local startup, for a small project) and SlideShare (I required my undergraduate students to use SlideShare winter quarter).

Of these four, I use SlideShare the most — it’s a great tool for browsing, either for inspiration in presentation design or for ideas. I’m part of a few WetPaint communities but I don’t seem to be a wiki junkie. I’m looking forward to testing Blist’s collaboration feature with a crowd-sourcing project. I’ll probably never use Liquid Planner and don’t see a current need for Cozimo, although I find it the more intriguing of the two.