Mainly so that people can establish an identity associated with their rants if they choose, many people seem to do this. Additionally it allows people to ident

Mainly so that people can establish an identity associated with their rants if they choose, many people seem to do this. Additionally it allows people to identify themselves as the OP when posting comments, and allows people to be more expressive by giving themselves a name to match their rant like 'AngryAtSuchAndSuch'. The pseudonym is not optional.