I've been a reader of the wikipedia for several years (since before there were 100,000 articles in the English version). A few times i made anonymous suggestions on the talk pages, and editors responded. And i'm impressed with how good the mathematics articles tend to be. (I also can't help but notice how "modern" the treatment is, in terms of ideas like universal properties. Probably on the whole this is also good. It's certainly adds a perspective.)
For some things it appears that you actually need an identity, so i've chosen one based on my dad, who was a good man.