I've always been picky about the freebies I pick up. I've been through the "grab it because it is free" stage in my other hobbies and ended up with more clutter that has to be managed than items that add value to my interests.
Since getting my Kindle, I've been downloading freebies a little more often, as that is the only content that I put on it.

I currently have 6 full pages of titles and I have only had it since Valentine's Day. (A small number compared to some people, but A LOT for me.)