Looks like anything that isn't Microsoft is becoming more and more irrelevant on the web.
These are the warnings I receive when I try to watch a news feed on these major So Cal TV sites:
www.nbc4.tv
Thank you for visiting NBC4.TV FeedRoom. You have been redirected to this page for the following reason(s):
NBC4.TV FeedRoom is not yet optimized for your
operating system and/or browser.
Click here for more information.
You may still enter the site, but you may not have our intended NBC4.TV FeedRoom experience.
A search of the system requirements turns up that the Mac is not supported. This site used to work with Safari and RealPlayer like a charm.
www.cbs2.com
Warning - Due to conflicts between Windows Media Player and the Netscape 6 family of browsers, Netscape 6+ users are unable to play video on this site at this time.
It didn't help trashing IE 5.2.3. I'm sure it wouldn't have worked anyway.
Edit: Nope.
www.abc7.com
I get redirected to this...
http://abclocal.go.com/kabc/features...elp.html?video
This doesn't help in getting my other PC friends to switch over. Some of the new Mac users I helped switch also complain about Windows-only sites or unsupported video. Switching the user agent doesn't help either (though it does work for some sites sometimes).