User blog comment:Eric!/The Wikia Grid layout/@comment-3327121-20120926173341/@comment-3030984-20120926174114

The columns are guidelines to help arrange content elegantly. It'll mostly be used by Wikia themselves when designing new features and pages. But individual wikis are also free to arrange their content according to this principle.

A good example would be the Video Games homepage, which clearly shows the 6 column design at work. The columns are guidelines for the dimensions of objects on the page. Objects can span multiple columns, but together they fit perfectly.

A practical example would be the editor, which looks quite similar to the second design in the above blog.