I've been seeing SP's and MA's for close to 25 years and the deception tactics didn't evolved much. Things changed in term of communication and ad sources, but the good old tricks of the trade are still used.
In the days of the newspapers, some ladies told me how more than half a column would belong to a single agency or group. And also how providers would claim having 30+ ladies on call when the reality was often less than 10, forcing a lot of creativity in term of descriptions to meet every needs.
With internet, personal websites, apps and specialized message boards, the process seem a bit more transparent. But in reality, very little changed. We still need to ask the right question and have the strength to walk away if something looks wrong.