Google quietly added mobile functionality to its Notebook web clipping tool recently, giving phone browsers some of the functionality of Notebook and its recent Bookmarks integration. The mobile version lets users add notes to a “Mobile Notes” notebook and browse their existing bookmarks and notes. That’s about it, unfortunately—no adding of bookmarks or labels, note editing, or searching from the smaller screen. But for devotees of the Notebook—and those using it to Get Things Done—it’s a nice tool to have on the go. Like most mobile Google webapps, Google Notebook requires an XHTML-compliant browser that also allows SSL traffic.