[daemin]

Facebook probably knew because she was logged in to it on her work computer, where she was also searching for and reading project management websites. Since every website has a like button it means that Facebook can correlate the two.

[rando444]

This girl has zero interest in project management, the whole reason she brought it up to me is because she thought it was weird because it's a subject she never even thought of outside of the one conversation we had just prior to her being fed ads for the same thing.