I have nothing against people using handles, guest ones or member ones as long as there is consistency.The biggest problem I have is the knowledge that some of these guests who flame have been around here a long while (they have to have been to make certain comments, know who to target, etc) and are probably members (in fact there is one well known case of a member) abusing the system to make remarks that they wouldn't have the guts to normally and this does leave a nasty taste.
I would suspect that this is why guests who make controversial statements can be treated in manners ranging from suspiscion to outright hostility.
Jon