SmoothWheel is FREE extension for Firefox, Thunderbird and SeaMonkey which provides you options to make your page scrolling more smoothly when scrolling the mouse wheel or use keyboard arrows.

Here are the benefits when uses this extension: 1). Faster navigation within long web pages (dynamic scroll distance); 2). Less disorientation when scrolling, especially with long texts (fluid scroll); 3). Reading while scrolling is actually possible; 4). No learning curve – unaltered interaction, but more useful outcome; 5). Very customizable, sane defaults; 6). Fun, Addictive – may trigger an emotional response, beware.

Add this extension for your F1irefox, Thunderbird of SeaMonkey here!