Exactly. It's just a minor effect that Facebook can detect using their massive database and use to convince advertisers to pay a premium for, even though there

Exactly. It's just a minor effect that Facebook can detect using their massive database and use to convince advertisers to pay a premium for, even though there is no evidence of how good a predictor it is. How many people that have a slight increase in their cross-posting actually get into a relationship? Using bad data science used to sell ads.