I think most people try to use the same username on each site they frequent, but not all, so I figured this would be a cool topic to start. I'm also curious as to how you found this site.
I'll start:
I'm "Floyd R Turbo" on Reef Central, Aquarium Advice, Reef Sanctuary, and I think maybe Fantasy Reef too but I never go there.
EDIT: also same username on the Greater Iowa Reef Society site (local club, now 975 members!!). By the way MACNA is in Des Moines this year. Just a little plug...
I found this site by reading the "Mega..." thread on Reef Sanctuary.
How about you?