I use Wikipedia very often. It acts as a starting point for me, not end all be all in seeking knowledge on a specific topic. I have always been aware of its power and weakness. Lack of peer-review makes the content quite vulnerable. However, the power of wikipedia lies in its speed and open house, open source knowledge, and the assumption that the contents are self-correcting by its collective and democratic nature. In topics, where I had some knowledge, I always thought their write-ups are quite accurate and at par. I have had wikipedia account for a while and maybe, I should contribute regularly in topics, I can.
I am quite pleased with their review process decision.