What are you currently trying to prove to someone or to yourself? If you could not identify anything consciously, think to see if you might be trying to prove something to someone or to yourself subconsciously, where you were so focused on the goal you might have forgotten the reason. If you could not identify anything still, is thinking about it sparking any ideas or motivation? I always have a list of things to prove to myself and/or others. My challenge is to remember them all rather than not have a thing to prove!
As of today, Mon Jan 31, Facebook is offering deals in Canada through Facebook Places, although I imagine it’s slightly old news in the US and some other countries by now. What you give up in exchange is your “Facebook soul” in your demographic information, which could be singled out if there aren’t many users doing it at the same time, like at a small business, and you end up advertising with a status update that goes out to all your Facebook friends.