How to kill a leech?

[neticule]

http://fusker.lewww.com/

one of the biggest leeches on the internet. somebody fuskered 30+ free sites of mine, i found out the next day after 17 gigs of bandwidth had been used up (is less then 24 hours)

alot of people here have been fuskered, you can only tell from stats that review the raw log, you wont know if you have been fuskered if you use a simple counter.