An interesting sales pitch. Some, though, say Google doesn't go far enough with their anti-spam measures. For instance, some of criticized their Gmail service, claiming it can become a haven for spammers. Google certainly isn't in the wrong, though. Independent research all over has come up with many figures that all agree spam costs businesses quite a bit of money – up to $70 billion a year, according to one study.
For all the companies that try, from Google's own Postini to Appriver to numerous others, the fight against spam won't be one with filtering and blacklists – an overhaul of email as we know it is probably the only real answer.