This addon is a replacement for the bookmarklet provided by Instapaper (http://www.instapaper.com/). It adds a simple menu button to Firefox's toolbar palette, offering the menu items "Read Later" (i.e. post to Instapaper) and "Open Instapaper". To use it, just drag the button from the toolbar palette (right click on toolbar -> customize) to the desired location in your toolbar. イメージギャラリー