Google Notebook has finally arrived. What is it? Google calls it "an online 'notebook' where you can organize all your research, add personal notes to it, and share it with others," and this is an apt description. A more technical description might describe Google Notebook as a kind of "web clipboard," inasmuch as you can "cut and paste" links, text, images, etc., into your online notebook.
Better than "cut and paste," Google Notebook uses browser extensions to allow users to easily mark materials using a right-click contextual menu, as pictured below. The two-click operation silently adds the item to your Google Notebook, which you can then retrieve later from any location. Google Notebook users will also see modified Google search results, with "Note this" appearing to the right of the usual "Cached - Similar Pages" links on search results.
Users can establish multiple notebook categories, if they wish, and can even choose to make some of those categories publicly viewable at a special URL. You can then arrange your clips in your notebook and annotate them if you desire, but strangely you cannot assign clips to multiple notebooks (that is, your new Thai recipe couldn't sit in both your "Thailand" notebook and your "cooking" notebook). Tagging is not supported, either.
Google Notebook is only available for Firefox and Internet Explorer at this time.