yes where you advertise, your prices and your pictures (amateur/professional) determine the type of clients you get
I disagree, rude disrespectful people have just as much access to the internet as genuine, polite men who do follow through with bookings. Similarly having higher rates doesn't make you any safer, if someone is going to waste your time your rates are completely irrelevant.
A few years ago I added myself to a directory which appears to target a 'higher class' of clientele. Pretty much all the same known TWs and dodgy guys to avoid came out of the woodwork, they'd seen the 'new' headline and hadn't twigged that they'd contacted me before, even though I was using exactly the same phone number and working details. Three of the worst, roughest located outcalls came from the site, two of the were guys pushing for bareback, the 3rd can't get anyone else to visit because the amount of cigarettes and beer he consumes means he and his house reek of stale smoke and alcohol.
After a while I did start to get decent bookings from the advert, just like any site it takes time to filter through the initial onslaught of guys waiting to pounce on new advertisers - for the very reason that no one else will see them.