This is 3 columns layout with content presented on the left side, which is typical for blog sites. On right 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. Moreover, 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: