Here's my theory for what its worth....
Punter meets prossie & has a good time so leaves decent AW feedback
Punter then requests another meet & prossie turns him down for [Insert reason]
Punter gets upset so decides to use UKP's review system to vent his anger & damage her reputation, because he knows we are all mugs on here & that we believe every word that's written
She was shit but he didn't have the bollocks to write it on AW & he's rubbish at writing reviews?
Either way I wouldn't be surprised if said prossie joins up pretty soon to request its removal.