"But seriously there is a case for not writing under one's own name. Google is everywhere these days, and uses very clever methods to identify what is a person's name, and to link it to various sites. And any smart prospective employer will google on your name, and if he finds you are posting anti-business left wing views everywhere then you won't get the job."
Yeah but for all you know Dave Wilson might be my 'real' name for internet fora purposes.........