Instead of installing it by dragging its icon to the Application folder, uninstalling Picasa may need you to do more than a simple drag-and-drop to the Trash. Picasa is a third party application that provides additional functionality to OS X system and enjoys a popularity among Mac users. Unlike the software developed for Windows system, most of the applications installed in Mac OS X generally can be removed with relative ease.
How to Uninstall Picasa Application/Software on Your Mac
