Social Networking Potential for Google

Google Reader recently launched something called Notes which a combination of Twitter and Google Shared Stuff. Basically, notes made Google Reader a platform for you to stay connected with your friends and update each other on stuff you are up to lately (kind of). But it seems so far that Google's attempts to socialize its products have been bits and pieces here and there. Imagine grouping all Google product feeds into one place, probably your Gmail Chat window, just like this:
Not just your shared notes would be showed, but also public events in Google Calendar, Google Docs documents you share with your friends, YouTube videos, photos in Picasa Web Album, or even comments you make on Blogger. One platform that informs you of your friend's latest Google activities just like what Facebook is doing. However, this could potentially be more powerful than Facebook since Google products focuses on productivity while Facebook is just for fun. Corporates would find this a perfect tool to better connect its employees and improve efficiency. What do you think?