I was the one who [edited](http://serverfault.com/posts/730376/revisions) [your question](http://serverfault.com/questions/730376) and removed the [tag:windows-server] tag. 

The main reason for that was that the tag popped up in the [new tags](http://serverfault.com/tags?tab=new) overview and it doesn't really improve upon the version specific tags such as [tag:windows-server-2012] [tag:windows-server-2008-r2] etc. 

Afterwards I converted it to a synonym for  the [tag:windows] tag, which already has the following recommendation in the tag-description which is relevant for the Windows Server family operating systems as well :

> Windows is the brand name for a series of operating systems from Microsoft. Instead of tagging a post "Windows", try to use a more specific tag, like windows-7, windows-xp or windows-server-2008-r2