I don't know if any of you ever look at ParentCenter online, but I do quite frequently. Recently I saw they have been doing some BETA testing and one of the new tools they have developed is a Behavior Problem Solver tool.
You pick an age and then a behavior you need help handling with your child and it brings back articles and suggestions. It's really great and it has a lot of helpful tips for when you are feeling exasperated. They must have a huge database running behind this thing. (Yes, I know I'm a big nerd!)