Filters getting better at blocking spam

You might not believe it after glancing at your e-mail inbox, but professional spam fighters say they’re making progress in the war on digital junk mail.Billions of unwanted spam messages continue to flood the Internet; indeed, spam now accounts for about 90 percent of all e-mail traffic, according to e-mail security officials who attended a conference on spam held late last month at the Massachusetts Institute of Technology. But improved filtering technology means that the great majority of these messages never arrive at their destinations. And last year saw the shutdown of several major spam senders.
www.boston.com/business/technology/articles/2009/04/11/filters_getting_better_at_blocking_spam/