"Last week's bust of the largest spam operation in the world, which was run by a Queensland resident, has had no measurable impact on global spam volumes."

"Twitter, a start-up company in San Francisco that has become a household name, is the leading microblogging outfit. … But Twitter has absolutely no revenue — not even ads.

Yammer, a new and much smaller copycat aimed at corporate customers, has a mere 60,000 users. Unlike Twitter, its founders set out from the beginning to charge for its service. Just six weeks after its public debut, Yammer is already bringing in a modest amount of cash."