Altough my last tests where more then a year ago, they turned out very well. CRM114 (the name is a funny reference to a movie with Peter Sellers) can learn very quickly what is spam and what not based on users classifying a couple of emails. The developers are a fun gang who really want to get the bugs out and make improvements to accuracy (which is already very high). I am gonna use it for sure (as soon as they make a version called BlameAce)