Did the Yahoo homepage appearance change for Firefox?

Hi. My Yahoo's homepage appearance changed tonight, and the URL now reads:http://m.www.yahoo.com/I use Mozilla Firefox as a browser, and I see that my Explorer is still using the Yahoo I'm familiar with. The change just took place tonight, but I updated Firefox like 2 days ago. Is this a Firefox thing, or am I in some hacker's paradise?Please view these screen shots for more info:http://www.flickr.com/photos/13654616@N05/

doesn't look any different to me.

I think that's 'My Yahoo'

Yeah I thought maybe I was in "My Yahoo", but I'm not. I search around that page to see if I was signed in or something, or if there was an Opt out link, but there's nothing. It's weird, it was the usual way for 1/2 of the day, then it just turned into the "New to me Yahoo" image, with the m.www.yahoo.com. Wondering if it's a Mozilla thing?

Yahoo randomly selects users to test their hew homepage on. You cannot opt out, nor can you opt in. I know because my mom's computer was selected.Proof?
http://www.techcrunch.com/2008/09/17/yahoos-all-new-home-page-a-mix-of-old-and-new/P.S. What browser you use has nothing to do with selection.