A friend of mine mentioned that adding links to Qassia is helpful for Search Engine Optimization purposes, mainly getting links to your site.
I've joined Qassia. I like the idea of being able to build a search engine with your own content sort of like a personal wikepedia. It also helps for backlinks etc via your articles in the site or by comment backlinks with your keywords.
Bill Hartzer @ Qassia
I'm watching the power of the links there, and so far they appear to be helping.