Findka is a cross-domain recommender system: it can suggest podcasts based on what books and movies you like. It's not very good since there aren't many users yet. But if you try it for a little while, you'll probably find a few interesting things.

Findka is kind of like a "smart newsletter." Essays are submitted by users. Findka picks which ones to send you. You click on the interesting links, and then Findka learns what you like. The more you use it, the better it gets.