Peg It Button
The 'Peg It' button lets you easily add images from any website you are surfing.
Drag this button to your Bookmarks Toolbar
To install this button on Firefox:
Display your Bookmarks Toolbar by clicking View > Toolbars > Bookmarks Toolbar. Drag the 'Peg It' button to your bookmark toolbar. When you see an image you want to add to your boards, click the 'Peg It' button!