Welcome to the latest TWiT (This Week in Tech) update. This week, we'll focus our attention to the world of online advertising and try to figure out why the entire interwebs is losing its collective mind.Spoiler Alert: It could have something to do with Google changing its advertising policies, Facebook revealing how much of its revenue is generated from online ads (holy s*^t, it's a lot) and YouTube promising to be less racist.Let's get started!