When I view a question on GIS Stack Exchange, the "close" or "vote to close" link/button appears to be missing.
Did this get removed on GIS Stack Exchange?
I have a rep of 451 (at the time I post this) and the FAQ says the minimum rep is 250.
250 is for your own question, 3000 is minimum for any question.
With only 9 users currently over 3000 rep, it might take a while to get the 5 required votes.