Thank-you to Sadje for this question.

My post titles are extremely important to me. They can encapsulate the essence of the post itself or mislead the reader a bit in order to surprise him. Each kind are tone setters and hopefully ‘hooks’ to entice people to read more. Titles are no different from headlines in that respect.
The title is sometimes the ‘cherry on top’ of a post I’m especially proud of so to figure out a clever little play on words or to use a powerful statement from the post itself are each possible. I rarely create a title until very last. It would be like naming a puppy I hadn’t met yet to do so.