I have used mostly gvim (and vim via ssh) for almost all my editing needs for almost 10 years. IMHO, some gvim/vim/vi questions definitely belong on SO. For example,
Is it possible to have a Vim syntax file command span multiple lines?Is it possible to have a Vim syntax file command span multiple lines?
and
Is there any way to enable code completion for Perl in vim?Is there any way to enable code completion for Perl in vim?.
On the other hand,
http://stackoverflow.com/questions/1537975/whats-your-vim-environment-like-closedhttps://stackoverflow.com/questions/1537975/whats-your-vim-environment-like-closed
is about colorschemes and such and I think rightly belongs on SU. Finally, questions such as
http://stackoverflow.com/questions/1562886/managing-different-versions-of-vim-in-unix-closedhttps://stackoverflow.com/questions/1562886/managing-different-versions-of-vim-in-unix-closed definitely belongs on SF.
Therefore, a judgment call needs to be made by posters (and those who can vote to close questions) on a case-by-case basis.