email meltdown
David Reed provides a cogent technical discussion of what may well be the impending end of email as we know it. Between the spammers and the anti-spam vigilante's, it's becoming impossible for individuals or small businesses (or even large businesses) to buy internet mail service. You can send mail as (say) vze385610@attbi.com, providing free advertising for your phone company, but it's becoming increasingly difficult to send mail as bernstein@eastgate.com at almost any price. It's already a mess, it's going to get worse.