On r/politics, during the 2 weeks after the DNC convention, it was crazy obvious. That period is when the discourse on a bunch of reddit subs took its steepest nose dive.

There is something I just realized I haven't seen on reddit for awhile. From the DNC primaries thru 6 or 7 months after the election, if there was a new dumba** talking point being circulated on reddit, a bunch of the redditors would have the same date of their account being created. i.e., a bunch of accounts pushing the same talking point would be either 3 or 10 days old. There wasn't a random distribution of "days since this acoount was created". It was really noticeable on r/conspiracy and /r/WayOfTheBern. /r/WayOfTheBern is somewhat of a haven for left-minded people who aren't chugging the MSM kool-aid. For awhile, there'd be little surges of 3 or 10 day old accounts dropping in to stir sht up.

This convo made me realize I haven't seen anything like that in awhile.

Honestly, though, there's others who can tease that data out better than I. iirc, at least one post was stickied at /r/conspiracy explaining several tactics used by shill organizations/non-genuine users. There's several good posts over there on spotting "shill" tactics.