Google's announcements relating to mobile didn't end with the launch of the Nexus One yesterday. Google Reader received some updates that are intended to work within the world of cell phones (along with one Web interface upgrade), too. The list of changes is fairly long, and all together, they do a good job of bringing the mobile version of Google Reader in line with the Web edition. For starters: Google added support for "liking," tagging, and sorting feeds according to items' ages.