AT&T has announced two new mobile applications that promise to keep customers connected to their online world: JuiceCaster 6.0 and Buzzwire.

JuiceCaster 6.0 enables customers to use their AT&T wireless device to instantly share and post mobile videos and photos to online communities, including exclusive mobile video postings to YouTube and Flickr. With JuiceCaster 6.0, AT&T customers can: post mobile pictures and video to social-networking sites and blogs, including Blogger, Facebook, LiveJournal, MySpace, Twitter and Xanga; set their status to update automatically on Facebook and Twitter and receive friends’ status updates on their own phones; broadcast existing or new mobile videos and photos to global audiences using YouTube and Flickr; and make content public or create custom groups by adding and connecting with friends directly from AOL, JuiceCaster, Gmail, Hotmail, MS Outlook and Yahoo.

With Buzzwire, users can access and customize a streaming media library with over 5,000 video and audio titles, as well as live Internet radio, directly from AT&T phones.

“Summer travel doesn’t have to mean taking a vacation from your online world,” Mark Collins, vice president of consumer data products for AT&T’s wireless unit, said in a statement. “There is real value and demand for giving consumers the tools to create and share video on the fly.”

JuiceCaster 6.0 is available for $2.99 a month on compatible 2G and 3G AT&T handsets; the Buzzwire mobile media application is $4.99 a month and is available for download via the AT&T MediaMall.