This document lists 10 mistakes that can make a Facebook page look dumb, as presented by Social Squared. These mistakes include not having a custom URL, talking at customers instead of with them, using hashtags, liking your own posts, badmouthing competitors, only promoting yourself, having a random image in link previews, using too many caps or exclamation points, responding negatively to negative comments, and providing templated answers. The document encourages correcting these mistakes to avoid embarrassment and look more professional on Facebook.