We used to have these kinds of discussions on here, regularly, a couple years back. I basically answered with "heck, I don't want to meet anyone right now, I'd be happy just to have someone watch a movie with me". Hence, our original little movie group was born. Every week or so, I'd suggest a few movies to see, and people would mention if they planned to come or not, and sometimes, I'd write a small review.
As a 'singles' group, it was only marginally 'successful', although two members of that original group are getting married this Saturday. But it did work in other ways - if you have a bunch of friends, they have a bunch of friends, and people can host parties and bring other friends. So while you may not meet the love of your life amongst the folks online - chances aren't impossible that they know someone who might be.
Another thing is, many people who might go out alone to a bar can be more at home, and find it easier, if they are with a group they are comfortable with. When you're out with a group of people - you might meet others along the way. This happened as well, with our old group.
So if you don't think the group of folks you've met online so far are doing it for you - consider that *statistically*, the best venue for meeting someone is still through mutual friends or through parties and functions held by friends. So come on out and meet with your buddies online. You never know.