Karma bots eveyrwhere on this subreddit

There are bots with random usernames commenting generic compliments on pixelary drawings and then upvoting the other bots. This is bad, because karma farming is bad.

Mods, PLEASE BAN THEM! This game is becoming like unusable

examples:

https://www.reddit.com/r/Pixelary/comments/1tsai6c/what_did_udarth_marko_23_draw/
https://www.reddit.com/r/Pixelary/comments/1tpyvxk/what_did_ujolyonli_draw/
https://www.reddit.com/r/Pixelary/comments/1tqi19q/what_did_ureasonable_dot2434_draw/

basically, if a post has more than 2 comments, the rest are probably bots.