Mac user share/users online

On another (non-Mac specific) message board, I'm in a discussion with a Windows users. We're talking about why there aren't any online casinos that have Mac software, and he quoted a statistic he 'heard', that for every 14,000 Windows users online, there is 1 Mac user online. Clearly, this couldn't true. I mean, even just thinking logically, if Mac has a, what, somewhere in the neighborhood of 4-8% market share; if the 14,000:1 figure was right, that would mean a very, very, very small percentage of Mac users are online.

I'd love to find some soures to back my point up. I've done a little searching, but have yet to come up with anything. Anyone know of published statistics; recent figures for Mac's market share, and something to refute that silly 14,000:1 figure?

 

Yes, obnoxious, blinking ads all over the place, not to mention spamspamspam = awful. But playing perfect blackjack, taking advantage of casino bonuses, knowing when to cash out, and making a little bit of money while having fun = good.