Which Dating Sites are free? I don't have cash to pay?

I need a free singles site because I don't have the money to pay. I do want to send messages and IMs to the ladies. Not interested in a friend-chat site where ladies aren't really there for dating purposes (ie. friendster, myspace etc). So far I've found one good free dating site www.yPeopleDating. Have you tried any free dating sites that you can recommend. No rude comments plz. I'm serious about this and I dont have cash right now.