A while back I wrote e-mails to all of the bloggers whose feed I subscribed to asking them to change to a full-text feed. A lot of them said no, and a major reason was because of content theft.
Fortunately, I have never (to the best of my knowledge) had my content stolen. This can either be seen as a good thing, or as a lack of quality on my behalf. Oh well, I write what I want and I like what I write, so I’m happy.