$pam, $pam, lovely $pam

Wednesday, 31 March 2004, 12:59 PM EST

Two weeks ago, software developer Tumbleweed Communications announced it was buying privately held Corvigo, which sells a Linux-based anti-spam filter. Shares of Tumbleweed, which already had other anti-spam products, are up nearly 500 percent during the past 12 months.

And last week, private anti-spam software company Brightmail filed to go public. As unwanted e-mail continues to be a huge problem for corporations and consumers, analysts expect both more mergers in the sector and more companies looking to go public.

By Paul R. La Monica at CNN.

[ Read more ]

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