Back on the days when i wasted my time farming for low drop pets i've met tons of bots and reported them all.Gm responded they will investigate and will take further measures.One lvl 60 hunter in vanilla gear still farms the bog needlers ( or w/e they are called, forgot their name ) from Zangarmarsh.That was i think half a year ago and saw him still running his route while i was lvl-ing a tauren paladin right after 4.0.1 hit. So yeah, dunno how much reporting helps or when are they finally banned.