Google Notebook team has released a browser bookmarklet that enables you to save web clips in your Google Notebook page without installing extensions.
Bookmarklet link – Note This – Drag this to your bookmarks toolbar
While this is obviously useful because you get to clip web content from anywhere, the only problem with the Google Notebook bookmarklet is that it is too buggy and may not always work as expected.
And each time you clip something on a webpage, it will ask you for a confirmation – "Do you really want to clip this page." May be you should wait until they fix the bugs or release a new version.
Related: Add Google Notebook to Firefox sidebar.