As I just said to someone else, if it's not something that can be used to identify them and it isn't used on more than one site, than it can hardly be considered worthy of removing. But even then, people voluntarily put their information out there to begin with. If they choose to do that to begin with, why should it be removed? If they put deeply personal information it might take a simple name change, which MMO-C allows, to make it so that no one can just google your username.