I use OKCupid, I've had success there since I've been using it in December. You really need to know what you are doing when writing a profile because a woman is reading it and they hear things differently...
Don't write "I like to hang with my friends, read comics and I'm currently in between jobs"
She'll hear "I sit around all with all my friends and read comics because I'm too lazy to get a job"
Do NOT post the following photos..
1) you shirtless
2) you drunk or with drinks in your hand
3) you with tons of other women
4) your motorcycle,truck, car or any other material object
5) The MySpace Photo
6) Overly smiling
Photos you SHOULD post
1) You with an animal
2) you being goofy and having fun
3) you not looking directly into the camera
4) Full body shot with clothes that fit you
5) Show off your passions (i.e you playing the guitar, golf..)
When you write your profile, word it to a woman's ears. like "I love playing with my dog on the beach, it's so much fun how he runs into the ocean and wants me to swim with him, I feel that he just wants to see me get wet!
Much more engaging than "I like to play with my dog" which is guy talk. Talk she talk. Paint a detailed picture with words on your profile so she can connect with you! Cause women are all about connecting!