We've been watching the shift in Facebook's audience demographics and its transformation into a marketing channel for connecting with online adults. This initially seemed like a major coup. Few of us could have predicted it when the site first launched as college-focused social network back in 2003.

More of a surprise is what Facebook is poised to become next: a B2B networking and marketing platform that attracts corporate executives and decision makers.

It's been nearly a year since Facebook launched open registration, but a mere few months since business really began to embrace it as something other than a potential media buy. For some, it's replacing LinkedIn, which has been criticized for being too dry and corporate.

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