Google would be a great starting point. If we all start to file Spam reports at
http://www.google.com/contact/spamreport.html
…one or two will get through.
You need an offending URL and the offending Google Search Words to report it properly – look at the form you’ll see what I mean.
Kill them off Google and that would do the trick pretty much in itself. Watch 888 come crying back to affiliates saying “look we are taking action…please come back”. Yeah right.