I know first-hand that when studying for an exam, and something isn't making sense, you can do one of three things: stare at the textbook until it gives you a headache, forget about it and move on, or ask someone.  Come test day, I think you'll agree that the latter is the best option.  This will be a great way for folks who are using the site to help one another, and to let me know if there's something I need to fix!'