It has come to my attention that in some areas of the country there have been recent incidents of imposters using the Handel of an established Hobbyist to book an appointment. Then when the guy leaves the provider finds the envelope is empty. Although this has perhaps occurred in the L.A. area, I have not caught wind of it in L.A. yet. But this has been going on in certain other areas. I also was told second hand that some guy did something similar on P411.
Basically the way these providers got set up is they did not have the guy either PM them through TER, schedule through the P411 system, or have the guy confirm himself through DateCheck such as adding the provider to his fan club or other means. Just like a lot of us have a no reviews, no deal policy, providers should have a no handle confirmation through one of the networks, no deal policy.
Besides just getting ripped off, slipping up like that could have a much worse result since guys that have been blacklisted all over the place could use the same trick.