On SO there are tags for emacs23,emacs24 due to version differences in Emacs.

How do we want to deal with such tags here (particularly since we could end up with emacs24.3,emacs24.4,etc)?

What version are we assuming is default when answering questions?

This can ultimately become an even greater issue with backwards-incompatible changes going forward (inclusion of package.el was one such) leading to older questions not necessarily indicating that they are not necessarily valid with the current release.