I read Wikipedia a lot, but never found the need to join because I didn't believe I could improve anything that was posted already. Eventually, I got over that when I ran into a typo, and figured it would be good to get a user name just to give back to the encyclopedia I use (and not just be an IP address). From there, I continued looking for little problems I could fix. My first non-minor edit was in the Windows Server domain article where domains were referred to as if Active Directory was the only central database ever used. I knew that to be incorrect, so I found a source and edited that section.