I don't know. I've never really used the personals here, but I know that if I were to write a personal, someone to then reply with 'pm me' would make me most likely not to. If i had spent time thinking out a coherent 'advert' for myself, I would not then want to go and write out a whole new pm explaining it all pver again. If the potential dom was so lazy as to not be able to click on my name and write a pm in response then theyre too lazy to be with me!
/end rant