I first became familiar with Web 2.0 this year, at the start of my Masters course. I only wish I knew about it sooner. I strongly believe Web 2.0 is necessary (for both teaching and learning) in education today. As students arrive every year with more and more technical proficiency in the use of these tool, it is extremely important as educators to effectively incorporate and use Web 2.0 tools to achieve educational outcomes and objectives.
I have already explored and blogged about many of the Web 2.0 apps below but if you have not already, I encourage you to do so.
Web 2.0 Apps to Support Blooms Taxonomy