I don’t think that Match actually makes any effort in analyzing their “matches” beyond zip code and age. They look random to me, anyway. You’re supposed to do the work yourself.
What do you find “scary looking”? And, if I may ask, how old are you? I find the overwhelming majority of people on Match to be more or less ordinary looking, which seems about right.
Considering the number of people I know (of both genders) who were married to psychos and it took them years to figure it out, you’re probably not going to be able to weed them out based on their prose style, mugshot, or their behavior on a single coffee date. Internet dating seems like it would be a simple thing from the outside, but the fact of the matter is that it takes a lot of work to find someone both attractive and interesting, to get that person to write you back, to get that person to actually meet in person, to get that person’s schedule to mesh with yours, et cetera. If you could find a dating site that narrows things down a bit as far as common interests – say, JDate if you’re Jewish, collarme.com if you want to be locked in a play dungeon – it would probably be a bit easier to at least start the dialog.
As an aside, my impression is that a great many women – the ones with a nicer photo especially – get weary very quickly from all the negative attention from creepy dudes and “hide” their profiles from public perusal. If you have a nice picture and have put some effort into what your own profile says, they will write to you. I’ve had more interesting exchanges with these “hidden” people than those I’ve turned up on my own. But it takes patience (and, of course, money).