A follow on from yesterdays post it has been confirmed that Microsoft has invested $240 million investment in Facebook Inc. Microsoft said that it will be buying a 1.6% stake in Facebook Inc valuing it at $15 billion. Facebook is only 3 years old and the investment is based on potential rather than proven profits however the investment has secured Microsoft as the advertiser on the site until 2010 for both US and Abroad, and Facebook is expected to generate a revenue this year of $150 Million.