http://blogs.zdnet.com/hardware/?p=6498&tag=nl.e539
Data released by StatCounter indicates that Firefox 3.5 is the world’s most popular browser, having edged ahead of Internet Explorer 7.
AusPhotography recommend Firefox to all our members for the best site experience.
We only test the site with Firefox and IE.

Both Opera and Safari are also know to work well with AP but we don't formally test with either.
Google Chrome is known to have issues.