I created a free service that allows you to swap headlines with other adult blogs. I think it's a more effective way of gaining new visitors than a simple link-exchange. All that's requried for you is to add one line of PHP code into your template. Everything else (handling trades, etc) is managed through the website.
http://jraptools.com/blogtrades/
It's currently in beta (just finished the coding today), so if you notice any problems, please let me know.