I'm all for having MSFT investors foot the bill for the friends of Microsoft executives

.... BUT

http://www.crunchbase.com/company/yammer

VENTURE FUNDING TOTAL     $142M
Series A, 1/09 3
Charles River Ventures
Founders Fund
    $5M
Series B, 2/10 4
Emergence Capital Partners
Charles River Ventures
Goldcrest Investments
Ron Conway
Keith Rabois
    $10M
Series C, 11/10 5
U.S. Venture Partners
Emergence Capital Partners
Charles River Ventures
Founders Fund
    $25M
Series D, 9/11 6
The Social+Capital Partnership
Chamath Palihapitiya
    $17M
Series E, 2/12 7
Draper Fisher Jurvetson
Social + Capital Partnership
Meritech Capital Partners
Khosla Ventures
Capricorn Venture Partners
Charles River Ventures
Founders Fund
US Venture Partners
Emergence Capital Partners
Max Levchin
CrunchFund
Ronnie Lott

No.... the Microsoft board just gave the MSFT investor money to Michael Arrington and Paul Carr. OMFG, show some restraint next time.