Yup, met my fiancee on OKC few years ago. We're getting married this fall. I used to be kind of a "who needs online dating?" type when I was younger, but then I found myself in my late twenties, working in a male dominated IT career field with nothing but old bearded married men around me during the vast majority of my time. After college and working retail, the easy access to girls my age went bye-bye with it. As a late twenty something it was hard to meet girls. Also, during this time, I was working really long hours at work, easily 60+ hour work weeks. It left not a lot of time for dating or finding women. There was really only a couple options, 1. Meeting girls through my group of friends, which happened frequently, but after awhile the social circles become stale and there isn't new girls coming in and out of it as often. 2. The bars. I'm not a shy guy, and I've met/picked-up girls at bars before, a coupe which even turned into relationships, but none of them went very far. At least with online dating I know a little about them before I meet them. So one summer I decided to give online dating a shot, and parused match.com and OKCupid and set up some dates. I went out with about 12 different girls, mostly first dates. All of them were cool and there was only a couple awkward dates, but most of them were at least fun and interesting, and a few of those first dates turned into more than a first date and I saw them again. One of those turned into a girl I fell in love with, moved in with, later bought a house with, and am now marrying. All I can say, is if your dating pool is limited for whatever reason, dating sites can at least get you interacting with people and out on dates together. For me, I like to call it "online MEETING" not dating. I'd exchange 2-3 messages with a girl tops, and then just tell them we should go get drinks. Real life chemistry is the most important thing, and you'll never get that through messages on a website. So I'd be like "This person is attractive and seems like they got their shit together", chit chat for a couple of message, and then go out and get drinks/coffee with them and see how it goes. I used to think online dating was unnecessary, but now I'm one of those "Met online; got married" statistics. I also work with another guy that's moving in with a girl he met online soon, and two other couples I know who met online who have gotten married. And none of these people are "nerdy" or "geeky" or people who couldn't "get girls in real life". They are all early 30s, and in the same boat as me. Meeting people just got a lot harder, and online dating made it a lot easier.
Yep, it's the sort of thing you could leverage and get OKC to donate towards and photograph the wedding for free. No joke, I'd look in to it.
At the same time, I think word of mouth from people like me and the other happy couples is doing just fine for them. They got bought out by Match a year or two ago. I'm sure that lined some pockets over at OKC nicely. Plus since OKC is free, and plans to remain to be free, so spending money on advertising kind of breaks that business model a bit. Match however, you'll notice, is the one with the commercials and wedding pictures and what not. They are the paid service, and they bought OKC so they could have a free service that is allowed to do it's own thing.