>>People are retreating from Git? or Linux? Linux on the desktop, yes, but I don't see that in the server room.

I'm talking platforms to develop for. So if you're developing server apps, whatever that means, you'd be smart to walk past .NET and embrace LAMP based on these latest figures from Q4 2012:

Linux and Unix variants run almost 2/3 of publicly accessed servers for online commerce etc.

Private server rooms: how often do you come across zOS? It's on >12% of private servers and is used by 95% of Fortune 1000 Companies. Windows has about 45% and the rest is almost all Linux/Unix variants- at least the ones we know about. Windows always is counted, Linux isn't- without license figures you can be sure there are plenty of Linux servers that never can be counted.

The gist is that Linux dominates servers, with MS familiars predicting a turnaround with latest cloud server variants.

Supercomputers are a rout: 93.8% Linux, 0.6% Windows.

I still think people are smarter to target apps for the prevalent mobile OS because that's what people will be ready to pay for. Server-side is going to get even dryer. JMHO.