Is Microsoft buying Facebook a good thing for PHP?

Microsoft is buying a piece of Facebook. What do we all think this means for PHP since Facebook is one of the "web 2.0" leaders built on PHP? The way I see it, here are the options:

1. Facebook continues on its merry path, taking only funding from Microsoft
2. Facebook continues on its merry path, taking funding from Microsoft in addition to some development "resources." Resources here could be people, equipment, and technology. The free people, equipment, and technology probably won't fit very well in a LAMP environment. Pressure to move infrastructure to MS-friendly environment mounts.
3. Microsoft rewrites the whole thing in C#
4. Microsoft learns how simple and scalable PHP is and freaks out, unleashing a FUD campaign the likes of which we've never even dreamed of.
5. Microsoft learns from the open source environment, partially embraces it, and creates PHP.net, a half functioning version of PHP for .net framework.
6. Microsoft learns from the open source environment, fully embraces it, and abandons Windows by creating their own GUI for the next version of Linux.

In reality, I can really only see #1 or #2 happening. Your thoughts?