I’m a single Brooklyn kid (is almost 24 a kid?), so goddamn frustrated looking for a boyfriend that I could just, uh, spit.
I don’t love the “club scene”, and have had it with Craig’s List. I’m wicked smart, and moderately cute, I think…
So, how do single people, who aren’t psycho, meet each other?
Well, you could show up at NY Doper Gatherings. We’ve had a pretty good track record of folks meeting at them, and even getting engaged or married.
Other than that, it’s a royal pain in the neck, as I know all too well.
In the wee hours of the morning in the pet food isle of the supermarket.
Really! Trust me. 
Online personals. You’ll find plenty of threads about them here, in IMHO, and in the Pit.
Trust me. QueenTonya didn’t believe me either, but she’s become a convert.
Someone has to do it, so I’ll get it out of the way.
So, NotWithoutRage, how you doin? 
I think I probably will show up at the next one…
And cards, I’m doin’ just fine. How you doin’?
Volunteer. Take a class. Join a sports club. Join a church if that’s your thing. Talk to people at the dogpark. (Get a dog, it does wonders for a social life!) Join a book club. It’s really hard to just start talking to people at first, but it gets easier. Hang in there!
If it is any consolation, I didn’t have a boyfriend the first 4 and a half years I lived in Chicago. It wasn’t so bad. I had time for other things (like some mentioned above).
The Laundromat
Starbucks
Barnes & Noble
Gristedes
Museums
Prospect Park (or a subway ride to Central Park)
Clubs (4 quickies) / Pubs (4 more substantial)
Do what interests you, and be friendly while you do it.
For example: I do the film festival every year. I see an average of two or three movies a day for twenty-odd days. In that time, I meet all kinds of folks in line, and see many people repeatedly. I also strike up conversations with people in the seats while we’re waiting for the movie to start. If I weren’t already married, and were I inclined to go to marginally more effort than I do in just talking, I could probably collect a phone number from an interesting woman every single day of the festival.
And that’s just the film fest. You can do the same thing if you go to the zoo, or the art museum, or whatever it is that you’re interested in. I’ve never really enjoyed trying to hook up at a bar, because the only thing I have in common with someone there is that we’re both at the bar, or trying to meet people at the grocery store, because the only thing I have in common with someone there is that we both eat food and use toilet paper. Not much of a foundation for a relationship, you understand.
That being said, I met my wife via online personals. So that’s another route I can recommend.
Being in the thick of wedding planning myself, I can attest to that.
And yes, online personals work too. Several of my NYC friends have had good luck with match.com. One guy met his now-fiancee there. Another is living with a girlfriend he met at match.
Good luck!