Dont ever sign up for any of these link exchange websites.Try to trade links or purchase links from other CAP member.You can probably get 100 links just on this forum , many of us have websites on various stages of developement that we trade with eachother.
I agree with Dominique ,only put quality links on your website.Write articles and start a Blog , get natural links .If you dont have time to do it yourself there are places you can pay to get your website submitted to directories.If you pay for 1000 directories , expect to see only 20% new links .Alot of these things are also junk .