It's so simple I cannot understand why this has not been proposed before.
Registering for the site must be moderated, and all accounts must be in the user's real name. This has to be supported by a passport copy, three recent utility bills and broadband account details.
Funding for the checks needed by EI would be from the €50 monthly charge to be a forum member.
New pop-up accounts would stop then!
People might be a bit more polite too - though lets be honest, this place is positively saintly compared to YouTube - now THAT place needs a serious ban-hammer!