I don't know why multiple accounts are allowed now since I had been away from the board for a while. I'm sure it's for a good reason. However, multiple accounts can be used and abused: a second account can be used to start a flame war with someone to get him or her banned, you could rep the shit out of eachothers posts to get extra credits to buy galleries (not a bad thing per se), you could have more vote weight during the Miss FreeOnes contest, etc. And I'm not sure if the possible benefits of multiple accounts outweigh the downside of it.
But to try being constructive: if the people from FreeOnes really want multiple accounts integrated, maybe they could have some kind of 'registration' as well so that it is known that someone has multiple accounts (without having to look it up in the databases). If somzone didn't register it, it means something fishy and could lead to a ban if... 'irregularities' are noticed. T could make what happens on the board more controlable (but it wouldn't tackle the above problems).