In particular I need some more rules that can take all the viagra variants (like Generi*c V-iagra Half Price Guaran-teed etc).
http://mywebpages.comcast.net/mkettler/sa/antidrug.cf
Won't cover the half-price part, but covers a very wide variety of viagra variants. Also detects spams with boatloads of kinds of drugs (online pharmacy spam).
