This is 3 columns layout with content presented on the right side, which is typical for blog sites. On left side columns you can present modules with sumplementary information for main content. The width of side columns can be adjusted conveniently via template parameters.
JSN Dome layout system is very flexible and capable. Module positions are designed in smart way to cover all possible spot where you might want to put content. More over, you can specify width of both overall layout and specific columns conveniently via template parameters. Bellow is live presentation of some most popular layout variations: