As we have stated in the past in multiple locations on these forums. We go through regularly and make accounts that show bot activity go away.
Contrary to what a lot of you think, we look at their holistic activity, and sometimes accounts that are reported as a bot end up being just someone that players the game to play, or someones kid etc etc.
I AM NOT saying this is the case with the above image just explaining more clearly. I in fact have seen bans that have occurred over the last 24 hrs.
These are done manually and by only a few people, they go through and look at literally THOUSANDS of accounts every day.
-Hapa