Ads silly.....lol.....The majority of Facebook's business is advertising: Those little ads on the right side of the Facebook screen provide BILLIONS in revenue. But you already knew that I hope cause if you didn't you should rethink your ability to make money investing. Even someone that shorts Facebook should know DD is very important. I'm guessing you have ZERO $$$ to invest or have lost all your proceeds from making horrible investments.
Market Data 
Markets 
AI
