UKP members may be a small overall % of the countries punters however it would be strange to think that it doesn't have an affect on business for a girl especially if the girl is well reviewed by a number of trusted punters.
So if UKP members who use reviews etc are say 5-10% of punters then 90-95% are unaware of reviews be it positive; neutral or negative.
On that basis a bad WG will still get bookings from the majority of punters despite having Negative reviews therefore her business won't hardly be affected, that's a shame for those punters but at least UKP members have the information so are protected or forewarned
However if a girl suddenly has a number of good reviews then the 5-10% of punters in that region all have a heads up and if only a small % of the UKP punters enquire or try to book her then it's still a large increase in her enquiries.
So lets say a girl works a few days a week and tries to get 6 bookings a day so only 18 slots a week available, she gets 100 enquiries a week some from regulars; some from new punters and some from time wasters but she normally manages to fill the 18 slots or at least 16/17 though some are same day bookings and last minute.
After a few decent reviews she's suddenly getting 500 enquiries a week and the extra 400 are from genuinely interested UKP members, all of a sudden the 18 slots are gone 30 minutes or an hour after she 1st logs on and switches the phone on, she is now almost impossible to book.
How / why has this happened she asks herself until someone tells her about UKP and the fact she has had so much good feedback, then supply / demand kicks in as it does for almost any business / commodity and she realises she can up her prices by £10 / £20 / £Whatever she thinks she can get away with.
I know tradesmen who do the same when business is good any they are booked up for the next few months, yeah provide a quote for the job but what would normally be £1000 gets quoted as £1500 to test the water, sometimes the quote is rejected but so what they still have enough work and sometimes it's accepted so they make an extra £500
End result is good SP's becoming harder to get hold of and increase their prices accordingly, of course a girl increasing her prices is one thing if she spots the opportunity herself but then again some bellend punters also tell them they should be charging more, Fuckwits
It's rare I find a gem but when I do I normally tip off a few punters who have helped me in the past before reviewing so that active members get a chance before the leeches clamp on and make her impossible to book