Strange, I went the other way.
I posted for a year or so under my real name (Ed Pellow) but then decided to change to an alias.
I'm not sure why. I don't post controversial stuff, but I feel more comfortable in a 'disguise.' I guess that given my unusual surname I didn't like the fact that I was so easily recognisable, when others weren't.
Call it paraniod, and I'm open enough to let you know who I am here, but I feel happier posting as Zebedee.