I started using this link selling site a few days ago, sign-up, add your site and people buy links that you put on your site. e.g They want a link to their site on your site, so you put it somewhere agreed, and get paid monthly :)

I've only just started it and I haven't sold any links yet, but i'll keep you informed and if it's allowed?? I can give people interested the link, just drop me a message.