New theme compatibility

Hey all I just submitted my first template to wordpress.org! All new browsers seem to work fine, except “seaMonkey 1.1.13” lol I never herd of it, but I got someone badgering me about it already.

(The Site: http://www.webomagazine.com/ and its currently using the template.)

Question: is this even a largely used browser?

Sub Question: give me some food for thought on the design, love it / hate it.