Interesting thread and I definitely get Christian's point. I joined way back in 2008 before I had purchased our Ericson and it was easier for me to use the same screen name on all my sailing related forums. My screen name comes from a long standing nickname "Slick" and a type of boat that I enjoyed zipping around on a lake with friends in college.
While keeping the screen name on some of the more anonymous forums like SA still makes some sense, I've never really tried to hide who I am here and have had my name in my signature line for years. I also manage a FB group for Olson 911S and a number of people here know me from both places, so it's pretty easy to figure out who I am.