Today I stumbled upon Clippings Firefox extension. It makes it very easy to save and organize bits and pieces of text. It offers really simple and intuitive interface, supports folders and drag-n-drop. It’s the closest Firefox alternative to notes implementation in Opera, and I really enjoy it already, even though I used for just a few hours.
There are only things that I can think of that could make this extension better: search and support for hyperlinks. Other than that, it’s just perfect.