Microsoft's adCenter have updated their pop-up help boxes to make them more, um, helpful.
The boxes now offer a "More" link that expand the information you have access to. They also offer assistance to guide you through the task you're embarked upon. There are also links to support and forums if you need even more information.
The goal is to provide on-the-spot help instead of users having to go hunting for help.
The pop-ups also now stay open until you don't need them anymore. They'll only close when you click the close X button, open a different pop-up, or navigate to another page.