But the thing is, if I check in at Starbucks all the time, and I "like" their facebook page, etc, what's the point of showing me their promoted posts? I'm already buying their products.
How will the fact that I like Starbucks tell Facebook when I'm in the market for a new vacuum cleaner? I might search for vacuum cleaners on Google, but Facebook is going to have no idea that I'm even in the market for vacuum cleaners unless I go and "like" a bunch of vacuum cleaner pages (which I presumably found by searching on Google).