Define "Genuine"?, is writing on a classified "Genuine guys only" not as redundant as writing "No time wasters please" given the fact that if someone really was non-genuine or a timewaster then the whole point of them replying would be to lie (thus not being genuine) and to waste your time (thus being a time waster?) so by asking them not to reply you are, in actual fact, encouraging them to reply and waste your time just for shits and giggles, like you wouldn't come on the forums here and make a big massive rant against straight people and end it with "No Straight replies please" would you? well you sound like you probably would but it would be frowned on a bit.
A good example is " not least that someone has survived previous meetings.", now if that is the criteria to trust someone then the assumption has to be that at first they had no previous meets which means you would have passed them over for people with more meets under their belts (pun intended) so how did the people with no previous meets get a rep of loads of previous meets unless they were like you seem to be and will bed anything with one hole and a heartbeat so are actually all people with no real "reputation" other than the one you all give each other, logically speaking all it needs is 10 of you on that site, each taking a shot at each other and giving each other a thumbs up (yet again pun intended) and you would all end up (another pun) with a 100 score. It's hardly a new idea, that's pretty much how Facebook started