I've seen some good ones that must have made over a million rand from trading in the last few weeks.
Edit: Some of them are insanely fast too. I just tested by pushing up my order by random amounts. They were in front of me again in a microsecond. Literally 0.1 seconds or so, just as I saw my order go on the book, they pop up in front. Humans don't stand a chance.
In theory how would these bots be trading? Like what would they be looking for when placing orders...