If you look at the tagline under the Answer Angels logo top left, it says "Q&A for Australian Women", so maybe the tag is historical from that? Obviously now we have non-Australians such as myself and some men as well in the AA community, so maybe the tagline should be changed?
I asked a question about men a long time ago, it never occurred to me to tag it "men" just as it has never occurred to me that there was a "women" tag! Perhaps I should post a "should men wear short skirts?" question just so I can use the new tag.... :p