I've tried a bunch, never had a ton of luck with any. But... I'll share what little success I've had.
HOT or NOT Very casual set-up which I like, very easy to use interface, a few cool and innovative features over other dating sites, and the best part- it was completely free. The downside, they're in the process of changing that right now because they ended up with a lot of spammers. They also stopped allowing "super profiles" for this reason because there were so many who opened accounts to advertise stupid web cam sites. Still a decent site for the time being. One cool thing is that it attracts people from all over the world. I started using the site originally in Korea, where I met a few people, and then when I was on vacation in Thailand and the Philippines I met several more. Since I've been back to the USA I've had far less success with the site but I've still managed to get a couple dates out of it.
springstreetnetworks.com /
Fast Cupid Personals - Online dating site for career oriented singles. Find hip, sophisticated and intelligent singles for romance, chat and friendship / personals.theonion.com:
These are all the same site, and there are actually several others that piggyback on the same network. Springstreet maintains the network and then licenses it out to various other sites for a share of the profit if those sites want to have a personals section. I originally found it as rottentomatoespersonals.com, though they've since stopped featuring it on rottentomatoes. I've had a few dates out of this site, and I think in general the quality of the ads tends to be a bit higher. That may be because of the fact that so many of the people who come here come via other non-dating sites like rottentomatoes or The Onion. I actually think most of the people are from The Onion, which means they're quirky and usually fairly bright, like me. You can pay for a regular membership or also buy credits. The credits I bought five years ago for 20 bucks are still good and haven't run out yet, in spite of the fact that the portal I go through to get there has changed 3 times.
Adult FriendFinder - The World’s Largest Online Adult Personals for Adult Dating, Swingers, Sexy Adult Photos, Amateur Member Videos, and Adult Chat : mostly a huge waste of time, so many fake profiles, inactive profiles, spambots etc. All the super hot models that show up in their advertising are, of course, not there. Instead it's mostly middle-aged divorcees, fat ugly swingers, and their ilk. The male-female ratio most areas is about 100 to 1. I actually have met a few people through here, but it was a long time ago, and then only because I used to spend a lot of time in the chat room, which sucked ass. I didn't meet anyone remotely like what they promise in their advertising, either.
Online Dating, Personals and Singles at Date.com : simple site, I think I've had a few dates out of it. Pretty run of the mill.
Welcome to Gothic Personals! : another free site. Good I guess if you like goth girls. Allows younger people to post profiles. Some interesting quizzes. I found this site originally through nin.com, have had several dates through it, haven't used it much at all lately.
MySpace : maybe worth it if you spend a lot of time on your profile, growing your friends list, or posting to groups within the network. Every once in a while I get random messages from girls who liked my profile, few ever go anywhere. I have met a couple though, one because I randomly left a reply on her blog, another because I messaged her in response to her profile and something she said in my college forum.
Facebook | Welcome to Facebook! : about the same. possible to meet people if you put in the time, visit special interest groups, etc.
eHarmony #1 Trusted Relationship Site Move Beyond "Traditional" Online Dating : I was rejected after finishing all of their survey. big waste of time.
Chemistry a new online dating site from Match.com for singles : features personality matching similar to eHarmony and promises not to turn anyone away. They also promise your first five matches are free, which is false, you still have to pay to talk to anyone or view any pictures. Geared toward long-term relationships just like eHarmony.
Korean FriendFinder - Internet dating for Korean singles around the world. Find Korean men and Korean women for romance, friendship and online dating /
Filipino FriendFinder - Filipino internet dating site. Find Filipino men and Filipino women around the world for romance, friendship and pinay personals : much better than their sister site if you plan on traveling to these areas, though I here friendster is more popular.
TeenSpot.com - offers teen chat rooms, message boards, profiles, music, movies, and blogs. /
eCRUSH: secret admirer match maker plus love quizzes, advice, and more fun stuff : mostly free and could be a good way to get a date with Chris Hansen, if you think he's cute.
Pretty much every other dating site I've been to has been a pretty big waste of time and/or money, and I've been to a bunch. match.com, cupidusa.com, love@aol, craig's list, etc. Of course that's just my experience.