First, the New York Attorney General's Office has filed suit against MonsterHut. The suit says MonsterHut emailed 500 million advertisements since March 2001. The company claims all the names on its list of 60 million addresses had "opted in". (See Office of NYS Attorney General).
What's significant about this case is that the attorney general isn't claiming that the products advertised by email were bogus. Instead, the state says MonsterHut lied about its opt-ins, and that this constitutes fraudulent advertising. You go get 'em, AG.
The second hopeful sign is on the international front. I previously wrote that five countries in Europe had laws against unsolicited commercial email. On May 30, the European Parliament voted to adopt such a ban for all 15 countries in the European Union (see EU law on data retention sparks condemnation). If this is ratified, and many expect it soon will be, the US will be one of the few developed countries that hasn't extended its ban on junk faxes to can spam as well.
Until Congress wakes up, state laws offer us the best relief. I believe there is no true technical solution, because the open nature of the internet allows spammers to jump to ever-changing servers.
Some efforts to block spam focus on the fact that spammers typically obscure their identities by sending their messages through open relays.
A few years ago, the default configuration of internet mail software was to pass along, or relay, anything sent by anyone. The default has been changed recently. But as described by an article on Wired.com, many servers in China, Taiwan and South Korea were set up years ago with the old defaults. As a result, many anti-spam filters now block email from many or all IP addresses in Asia.
The problem is that innocent users in any given address range are prevented from emailing through these filters. There are now more than 33 million legitimate email users in mainland China. Blocking all Asian emails because their system admins long ago installed software using defaults defined by English-speaking developers smacks of racism.
Equally important, blocking IP ranges doesn't stop the source of spam: a few individuals, mostly American, who profit from theft of ISP services.
My own research director, Ben Livingston (no relation), has just filed on behalf of his ISP a suit for $US53,000 against a Colorado spammer.
Windows users, you can file such suits, too.
Send tips to Livingston. He regrets that he cannot answer individual questions.