A simple Userscript for Fluid that adds a Read Later button for Instapaper to any tweets containing a URL.
Initial version checks for new tweets every 5 seconds.
Steps to Install
You will have to log in the first time you try to save a link.
Edit the body style declaration in the Twitter for minimalist Userstyle
background-image: none !important; background-color: #333 !important; }``` This makes sure the Read Later buttons (which are iframes) will not have the dark background.