I'd suggest a screencast on how to use it. Is it a separate site? An add-on that allows me to explore/suggest sites based on what I'm currently viewing?
There is probably going to be more than one way to use it, but the main way would be a browser extension. A web toolbar is also going to be there for people who don't like installing extensions, to get them started fast. You can see the demo of that (only shows you how you might browse through, had no functionality to add links): http://prettyobscure.jellly.com/
Let me know if it makes any more sense after trying the demo :)