Who's buying anti-spam?

Link: Who's buying anti-spam?

An increasing proportion of US anti-spam tool sales are "brownfield." That is to say, they're replacement sales—replacing products that are no longer doing their job adequately.

Spam is an arms race between spammers and anti-spam tool writers, which means...

• Some anti-spam vendors don't have the expertise to keep up—these vendors will either disappear or need to acquire another that has the Right Stuff.
• Others have good technology and smart people, but are are simply under-capitalized—these vendors are ripe for acquisition.

In one-to-three years' time...