I began listening to the StackExchange podcast a few months ago, and in one (of several in which they discuss the topic) Jeff and Joel were talking about quality posts, curating content, etc. At one point one of them mentioned that they liked question titles to be actual question, IIRC because it might help the question get more views when people are just typing questions into Google, since the title is in the URL.
As I began trying to become active on the site, editing question titles to be a natural language question is one thing that I've started doing a lot.
Does anyone else have a preference on this topic?