Nothing will change the fact that all of the women on dating sites are what you might call "hard to place"... as in the adoption term for older children of questionable backgrounds with bad habits and other undesirable traits. The women on these sites are desperately trying to deny that they are either dateless losers or being passed around as a whore because nobody wants to keep them. It's all an act. They are trying to appear as if they aren't the type of girl who has to be on a dating site because they don't attract a man in their day-to-day lives. And they are desperately trying to deny the type of man who does approach her on the site.
Oddly enough, this doesn't hold true for the men. There is a much broader cross-section of all types of men. But they get one whiff of the freak-show and go, "No thanks!" Either that or they are 'slumming' for easy sex with women who can't be too picky.
Remember that whenever you are dealing with a chick from a dating site. Perhaps it would be best to not look for women there. They are of low quality. They know they are of low quality but are doing everything they can to deny it. And, they assume that since you are approaching them, you must be of low quality also (aaaaahhh, gotta love that social proofing ).