I was very skeptical about this site when I first went on. I'll admit, they do ask you to answer a ton of questions when you make your account (I only answered them all because I had insomnia and nothing better to do). Yeah, I got a few messages from scammers, but after only a month, I met my boyfriend of two years who I now live with. And for the record, I did this with NO pictures uploaded- I find that cuts down on the scammers. I can't really compare to other sites, but I can say that someone who is honest in their profile and knows what they're looking for can definitely find what they're after here without too much trouble.
I've read a lot of reviews from guys who have had problems finding a serious girl here- to them I say, be a little more patient. There are a lot of creeps on the internet and a girl has to sort through all that to figure out if you're a serious guy, particularly on a free site that any psycho could be using. This site updates your matches pretty regularly, so if you keep at it, you should be able find a girl who is willing to give it a try. But to the guys saying they pushed for a face to face meet really quick- BIG MISTAKE! I would NEVER meet a guy I met online until we had talked enough via email or phone that I was sure it wasn't a trap. My boyfriend messaged me for about a month before I was willing to meet him. If you're truly a serious guy, then you should know that a serious girl needs (and is worth) the wait to be sure. If you're going to be an $#*! about it, then it's no wonder you don't get responses to your messages.