If you've got a website,
If you've got a website, you're probably familiar with the Alexa tools. Edit the way they work with your site with the Related Links Editor, the Indexing Request Form, and the Site Information Editor.
I was proud for years that I was a Related Link for Tomalak's Realm, not that it got me much traffic. But I'm checking now and apparently I'm not related anymore. Alas.