"The Horizontal Website Design style elicits quite a response from users and design traditionalists, people either love them or down right hate them. There does not seem to be much middle ground for discussion but more and more you see horizontally scrolling websites popping up around the net.
Instead of the traditional up and down scroll this style moves from side to side. Sometimes to enhance the experience it has auto scroll, or dragging capabilities, and sometimes its just a manual slide using the scroll bar. It should be noted that horizontal designs are not for every type of website. They generally work very well for portfolios and image heavy sites, but not as much with content heavy sites. With the combination of wide screen monitors taking over the market and multi directional mice, this experience could be a great new way of interacting on the web."