Comment by groby_b

When you implement that, an important thing to keep in mind is that "people" are usually a mix of interests. (E.g. if you followed me, you'd get a large helping of browser tech, photography, 3D printing, human rights work, and fashion).

It might be a better idea to allow people to curate search lists by interests and share those focused lists.

People are more interesting in the sense of "of your six closest friends, 5 vouched for this site" when a site/search result pops up.