The mention of that word 'amateur' fills me with total dread, it lends a certain patina to professional escorts that once it sticks it is impossible to lose. I work in Holland and the whole bleeping amateur scene has ruined what was once a very good business. Not to mention the quality of the providers really lacks, and again try as you might you will get calls from clients asking for the grossest things for the cheapest prices. So, I am sorry, I (when touring the UK), would have no interest in associating with a site that caters to the bored house wives looking for some extra pin money.
It encourages rank amateurs who have no clue as to what this job entails, and it requires more that the right genitalia, to snap a few low quality photos with a mobile phone camera, assume some of the least attractive poses and set up shop. Some sleazy man calls up offer the clueless twit a 100 pound, and she is over the moon offering him god knows what and for an unlimited amount of time. How the hell can a professional then compete with this kind of desperation?
Now if you were to offer a site solely for professional escorts with an appropriate name, so that there is no misconception as to what the site was all about, then that is a different story, and would be worth consideration.
I mean business is shitty enough with out compounding the problem and encouraging even more dross to land on the web.
Just my humble opinion.