And what it turned out was going on was that Facebook was looking at which links I clicked on, and it was noticing that, actually, I was clicking more on my liberal friends' links than on my conservative friends' links.
Tuli välja, et Facebook vaatas, millistele linkidele ma vajutan ja nägi, et tegelikult, vajutan ma liberaalidest sõprade linkidele rohkem kui konservatiivide omadele.