Are your parents Facebook users? Ask them about all the pointed ads that appear on the left and right panels of their FB page. Even for yourself. Do you see all the ads that appear on this page? Did you ever wonder why the schools are mostly local universities? Because THEY KNOW WHERE YOU LIVE. And they know your parents’ online shopping/search preferences.
This is called “big data” and it drives marketing.
By the way, these are designed to give you a good experience – but also to make lots of money. Remember that.
My point is that marketing is very sophisticated. Something about your profile fit the marketers’ data filter and you got the letter. Wait until you start your Jr and Sr years – and the onslaught of college brochures and emails that pile on top of you.