YouTube has somewhat surreptitiously launched its Mobile site at m.youtube.com. The site is xHTML-optimized for mobile phones, which must have built-in video streaming capabilities (RTSP/3GP with H263/AMR) to take advantage of the site. It also supports video uploading from mobile phones via MMS.The guys at Gizmodo just spent some time testing out the new site using two 3G phones over Sprint’s EVDO network. Among their findings (which they chronicled in their own video that’s now live on their site): –Videos must still be uploaded from the phone via SMS, not the site itself –Streamed videos can’t be downloaded and saved–The large video files will be both a big drain on battery life and too big for the iPhone’s EDGE network. Technology Industry