Android Root? What that for?

Root Screen Capture
http://hi.baidu.com/%C7%A7%C0%EF%C5%AA%D0%A1%B1%F8/blog/item/1c41841cb9331605403417a3.html

Root download
http://bbs.fengbao.com/thread-947737-1-1.html

More
http://www.howardforums.com/showthread.php/1733190-Sharp-SH7218U-Market-enable