Latest update on the new Google Plus Local page changes. These are rolling out as we speak. April 2013
Pages Image Dimensions and - Author: Mike Gingerich
Visual elements on timeline
Dream Grow's Cheat Sheet: Sizes and Dimensions, updated as of May 2012
Facebook Timeline Cover Photo: Size, Template, Ideas
Facebook timeline cover photo template. Click to view a detailed guide about how to create a great cover photo.
New Profile Picture Size 160x160