Funny, NUTS and I were talking about this the other day. Apart from the obvious shape shifters, I prefer to mod by current user name rather than play Sherlock trying to work out who's really who just to re-afix people's baggage on them. Change is as good as a rest imo. As for me, always been BrixtonR. That's cos all the other handles in the Brixton A to Z were already taken!
To follow Queenslanders vein. My Scottish link is actually pretty tenuous. Lived in Wandsworth all my life but me mums a scot and installed a hatred for English rugby from the womb so aside from rugby I'm English through and through. Has lead to many a "how many games have you seen" jibes but have a season ticket so can promptly shut them up.