We prefer a Stalin-era Russia "non-person" status to be bestowed on the troll. Maybe we could leave their smoking shoes?
We do remove single posts and posters, and sometimes this is non-disruptive. It would be nice to sometimes ban someone without banning all their questions however.
Kojak is correct - when a thread is "rotten," with abusive suers or created by an abusive user it is unlikely to survive a purge!
Let me know if you have any more questions!
All the best,
Spare Ed