The ranking may have also a role in this: ranking on a grid is usually presented left-to-right top-to-bottom, but that's not the order the eye scans (while in a

The ranking may have also a role in this: ranking on a grid is usually presented left-to-right top-to-bottom, but that's not the order the eye scans (while in a vertical layout the top-to-bottom order is natural). This paper from Yahoo Research contains an interesting analysis of the problem: Optimizing Two-Dimensional Search Results Presentation http://www.chierichetti.name/papers/optimizing2d.pdf?attredirects=0 http://www.chierichetti.name/papers/optimizing2d.pdf?attredi...