I like how Google Talk and Google Checkout are nicely integrating with other aspects of Google, such as Gmail, Orkut and Adsense, respectively, but what happened to the obvious opportunity between Google Notebook and Google Docs and Spreadsheets? (And what's Docs etc going to be called when they add presentations? Google Office?)
The thing that turned me away from Google Docs etc and Google Notebook is that Notebook is a perfect resource and fact gathering tool, and Docs is a great publishing tool, but there is no way to easily integrate all the valuable data from Notebook to Docs.
