zlacker

>>bluu00+(OP)
> site’s anti-abuse systems, many of which Bell and Gackle have written themselves.

That sounds interesting! How were these built? In the same Arc language? Any chance this can be open sourced?

>>part1o+X81
In Arc, yes.

Unfortunately not, because we don't know how to write anti-abuse systems that keep working once people know what they are.

>>dang+y91
Unfortunate but very true; it's always interesting to see what other people have in their bag of tricks - but a magician should never tell.

I would guess that you have rules based on patterns of observed behaviour, and that they do 80-90% of the effective blocking.