Yahoo tests a new feature Search Pad, which is similar to Google Notebook. Recently Google closed Notebook officially for new users.

Yahoo search blog says  Search Pad : Making Online Research Easier

Search Pad is similar to Google Notebook but stores the notes in a different way which will be ease of use for users.

Yahoo Search Pad will be used to save the important keynotes and websites while searching.

Video about Yahoo Search Pad

Search Pad is currently only in testing and is not visible to all users, check out quick demo video of Search Pad.