Google recently stopped development on Notebook

Google recently stopped development on Notebook, which means it's no longer open to sign-ups by new users or being improved.

Don't worry if you're already a Google Notebook user! You can still access all your notebooks and data from this page (http://www.google.com/notebook/), as always. Just log in with the username you usually use with Notebook.

If you're visiting Notebook for the first time, you can explore the many other Google products that are still supported. For example, if you're trying to jot down some quick notes or create a document that you can share with others, check out Google Docs. You can also try Google Bookmarks - it lets you remember web pages that you liked and access them easily.

For information on why Notebook is no longer being worked on, as well as other tools that offer Notebook-like features, take a look at the announcement on the Google Notebook Blog. Thanks for visiting!

http://www.google.com/googlenotebook/newusers.html