I've never used one.

Met the love of my life on OKC...better than other sites IMO.

I met my current boyfriend on okcupid 2 years ago, but I had very mixed experiences meeting people online. I'm glad I don't have to anymore!

I'm neutral. I had an okay time on a date but I didn't find anybody I was really interested in.

I met a couple of great short-term relationships on on-line dating sites, but strangely enough the only relationships that made it to long-term were with people I met in real life.
In regards to weeding through all the spammy messages, the sites you have to pay for tend to have less of that. The more it costs, the less people will be on there simply to waste your time.
The question system on OKCupid (you can answer as many or as few multiple choice questions as you like, its a little addicting like a game) is really great, because it allows you to weed out alot of your deal breakers before even talking to a person.
As a female, try browsing through the profiles and messaging a few guys you like, yourself. Guys don't tend to get alot of messages, so it'll probably make them happy and you're likely to get a response. Can be much more positive than wading through the 100s of poor quality messages guys'll send to you.

I've tried a number of them over the years. Most recently I was on OkCupid but wasn't thrilled with it but a bunch of people have told me good things about PlentyOfFish and I might try that.

We've been married since...before these websites existed.

I actually met my boyfriend from MySpace three years ago, when it was still relevant lol. Now we're on OKC looking for a girl for us both and it's pretty useful. They have a lot of options as to how you can narrow down your matches. Of course, since we're a couple on there hardly anyone messages us, but we've heard from multiple girls that some of the guys who message them are pretty creepy.

We've also used Plenty Of Fish and FetLife. POF kinda sucked. Most of the people on there are either married and looking to cheat of their spouses or just assholes. We only used FetLife for a week or two. We really didn't fill out our profile, but we did end up talking to one girl from there who seemed okay. FetLife is pretty annoying to use though because to find people who you may be interested in you have to go through pages and pages of pictures and profiles first. They don't have any kind of search or anything.

I think OKC is pretty awesome. Definitely the best out of the ones we tried. (:

Never used one, but not opposed to it.

I was just getting ready to try dating sites when I met my wife. We met online, but through a bulletin board. I have a couple of friends who successfully met someone through dating sites, though I don't recall which dating sites.

okcupid is mixed from what I've heard (some interesting people, but lots of duds). There is a site called blog.okcupid.com that is pretty interesting; it runs statistics of different aspects of their users, like which types of people get the most replies. That tells you a lot about how okcupid and similar dating sites work.

I've heard mixed things about okcupid. I know one person who ended up in a successful relationship as a result, and one who has had decent dates that didn't go anywhere

I wouldn't want to meet anyone on a dating site. Especially since I heard about one lady who was almost murdered by someone she met online.