Microsoft’s proposed $45 billion buy of Yahoo would give the Redmond, Wash company control over a top open source e-mail company, open source projects and an open source infrastructure. On September 17 of 2007, Yahoo bought Zimbra for $350 million. Yahoo’s infrastructure is built on BSD. Yahoo has released a myriad of software to the open source community and even sponsors some open source projects. So this deal would put Microsoft directly into the open source software business.