Just curious as to why those that have changed have done so? I went from uk_dave&gill (which is a name I've used since joining the Ford Probe forum 8 years ago) to plain "Dave". Usually by the time I join a forum "Dave" has gone, but I got in early enough to bag it this time!
Elsewhere I have used "cedricthecat" and "oXo" but for some reason, they didn't seem right for here!