BE SAFE!! You can be just as much a target as a woman!
There's not very much I can actually say about dating sites. Dating sites are mostly about meeting someone for a long term relationship and so it's a bit more difficult to find women just looking to get laid. But, like everything else, you definately can score if you've got the game.
Every site is different in terms of their features but if they actually show the popular ads, then use that to your advantage. There's absolutely nothing stopping you from signing up for a second account as a woman. That way you can see the popular male ads and adjust how yours is written to make yours just as popular.
Make sure you put at least one picture of yourself on your ad as that will get you more women viewing your profile. In fact, you should put a bunch of pictures in there. Not of you playing video games or getting drunk. Use pictures that make you look "interesting" and fun.
There's also nothing stopping you from signing up with a bunch of accounts to try out different styles of profiles. You don't even have to put a picture on all those profiles but if you do, make sure they're significantly different so it's not obvious you have lots of accounts.
The most important thing is the numbers. Once you've got yourself comfortable with the site and you have a profile that you think will work well for you, start sending out messages to other women and start your work. Practically every dating site out there makes you pay some money if you're going to send messages to women. So you might want to try a free dating site like Plenty Of Fish at the start until you learn how to really work dating sites.
And now: Get out there and practice, practice and practice more.
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