My answer. Hmmm - it wasn't really a question. No need for discussion, because Jeff Attwood already deleted them. I think you should create a sharepoint-2005 tag for extra laughs.
So I suppose the current position is the sharepoint-2010 tag is gone. That sort of works, because we can assume that it is the current version unless it is tagged sharepoint-2007, which should be less and less frequent over the next year or two. But it is essential to know if the poster is on 2007 - I have wasted quite a bit of time answerring questions only to then spot the 2007 and back to square one. Does Jeff understand how different the 2010 version is to SP2007? Probably not - why would he?
So far so good - no harm done by deleting the sharepoint-2010 tag. But what happens in 2012/13/whenever? Do we tag sharepoint-V15 questions? Do we need to go back and re-tag the 2010 answers that might not be relevant to the new version?
When I search for information on the wider Internet I usually enter "SharePoint 2010 blah" or "SharePoint 2007 blah". How is that going to work moving forward, with the 2010 tag gone?
I think we need a way of tagging which version of SharePoint a questioner is using. If the platform can't provide that then that seems like a shortcoming in the platform that will make it unsuitable as a long term repository of information (as is deleting all our content - sorry, I will try not to mention that again).