I was a mod on a pokemon battle simulator. I haven't been there in a few months, so I guess I must've lost that role. I was also once a proud Floodian*... but the whole site became far too pretentious and everyone tried too hard to sound like they had a masters in literature.
MSN and PSN too, if they count, and that's it.
*Bungie.net Off-Topic forums: The Flood. All of the usual shower were known as "Floodians".