Don't know about that. Maybe it's just luck, but we never had an issue or a disappointment. Must have set it up 8 times, all worked out well.
Must have something to do with qualifying the right kind of gent.
Out of probably 150 replies to different ads at different times (CL was THE best), 120 or so were instant rejects, another 15 subsequent rejects, 15 (approx) were keepers at different times.
Never had a no show or a last minute cancellation. They were as described ; clean mature gents, educated & professional. And very happy to get with my GF.