It’s not necessarily the stuff you post, I actually think they don’t give a toss about your shoddy announcement of breakfast or casual whatevers. But they do love to collect your meta-data, to slap some ultra targeted ads right in your drooling facade and sell your profile to other advertisers for lolz and profit. Your IP address, your age and preferences, and the things you really like (for example your clicks on “like” but also your eye movements, your pauses when scrolling) instead of the things you say you like, tracking you across the whole goddamn internet. Also, you don’t need to be on Facebook at all to get tracked and sold (shadow profiles are the absolute shit).