Read this in full, but one passage especially jumped out (I copied it below).
All those Russian bots serve two functions--a propaganda function, but also a huge empirical testing ground to see which of these messages sounds credible and holds the most appeal for US voters. They have in effect a huge wealth of polling data. 
The advantage over conventional polling is that they can see in much greater detail how, exactly, Americans react to these arguments, which ones have the most valence, how we rephrase them, what we add to them. Like a country-wide focus group.
We know roughly what Putin will say, already, because we see Russian bots and propaganda organs saying it. But they have reams of data telling them *exactly* which messages we like most and how best to phrase them.
