I like this thread but have hesitated contributing to it because I'm a little worried that you'll all laugh at me... ;)
I am the same way. Wikipedia = awesome outlet for OCD type behavior!!!and we get lots of good services for them, so I have more time on my hands than parents of young children. Plus, I have an obsessive personality, so when I get involved in volunteer organizations, I tend to be compulsive about it. I also love writing. It gives me a great deal of pleasure to know that topics like this that aren't well represented have been improved mostly due to my efforts. (I also edit [[Maya Angelou]] articles.)