There are millions of names that people can choose from.

So when somebody ignores those millions and names themselves driver9, rise_against or rocketronni, they are deliberately setting out to impersonate.

And even if not impersonating in character, they can only be using the name to annoy its owner.

Either way, it's anti-social behaviour.

PS On pool there's been marten_blank, martan_blank, martn_blank, martln_blank and marvn_blank so far.

...oh...and also martinsagit - which is only worrying because I am indeed a git, so wonder how they know me.