Last week, I did a demo of i-lighter.com, software that highlights text on web pages.
You save the highlights on a dashboard screen, and can retrieve them, see where they came from, and sort them.
Shortly after the demo, we learned the i-lighter company is closing down, due to lack of profit. Unless someone comes along (are you listening Google?) and buys them this week, the product will cease to work.
So, not to disappoint... I found WebNotes, which does the same thing. It's more complex, but you can enjoy the basic, free features and get more complicated if you are using it for grant research or a large paper.