Google Notebook

If you aren't already familiar with Google Notebook, you probably ought to be.

Combined with a very nifty extension for Firefox, Google Notebook allows you to very easily collect and organize content from all kinds of web sources:

• Right-click on a page or selected text to immediately capture the text or URL to the page, or add your own text directly into the notebook
• Drag and drop content into different notebooks with sections, and add labels to categorize by topic
• Invite collaborators to allow several people to work together
• Use search to find information in your notebook

Like most things Googly, it is curiously elegant and powerful.  For example, if the information you're collecting is location-based (say, hypothetically, you're finding disparate activities you might want to do in Barcelona, and collecting the clippings into a notebook) you can choose to view all notes on a Google map.  It will place pins for each clipping onto the map.