Be warned, my reply is boring....
First initial, last name. I concidered using the german spelling for this site, but I coundn't remember it...
I have so many email addresses and log-in names throughout the www, I started using the same thing everywhere (same password too)
That way I can usually remember how to get into sites....
I have two oddball accounts with different screennames, one of which is "Case" followed by afew numbers, which I can never remember, so I don't log in there anymore...
The "Case" name is paid in respect to WG's clasic.... Neuromancer
The other is "Nexus8" in respect to the classic "Do Robots Dream of Electric Sheep"