Pegs. Differential scrolling.

One scrollbar. Several scrollable areas. Independent (and hopefully sensible) distribution of movement.

Navigation.

Content area.

An experiment in keeping information on the page.
Columns are "pegged" in order to keep their content on screen while scrolling.

Pros:

Having site navigation remain on-screen may increase the chance that people will visit interior pages.

Ads in columns remain on-screen longer which could increase visibility.

Cons:

More interface logic to maintain.
Scroll behavior may be confusing.
May be difficult to make the behavior smooth and polished.

About this: No frames. Scrolling is managed via Javascript. Uses JQuery as a base. Design should work like as a normal page if the javascript is removed. This is just proof-of-concept and is not recommended for use in production yet.