Facebook today revealed several updates to its advertising policies concerning videos. The bad news is that six-second pre-roll ads will be coming to dedicated video tabs such as Watch. The less bad news is that it looks like they won’t be infiltrating News Feed. Approximately noone on the entire internet wants to click on a video and immediately watch an advertisement, but Facebook wants to try pre-rolls out to see if it works well enough to strike a happy tone with both publishers and viewers.