There are also various examples of authors choosing different names for different works to either seperate their works by genre or test how they'd do without th

There are also various examples of authors choosing different names for different works to either seperate their works by genre or test how they'd do without their fame attached to them (see Steven King's usage of Richard Bachman or JK Rowling as Robert Galbraith). Or just examples of authors using their pen names as a character in the series (see Lemony Snicket). Which incidentally is why websites should probably not try and force users into a 'real name policy', since in many cases the pseudonym used can be part of their identity on the service and how they want to present themselves.