Just found out it doesn't. Under 'Understanding Policies', it says "Block in all countries: This will block your content worldwide." Also, "Block: This policy type instructs YouTube to prevent playback of a video. You generally should not select a usage policy of block. This will prevent your video from being played in your YouTube channel. Block/Takedown policy is mainly useful as a match policy."I think it just blocks monetization. Don't worry, I have the same questions, they aren't stupid :]