This poll question is created on behalf of Urmas.
The return doesn't always return you to where you came from though!
Return Button - should return user to where they came from
Return option on Sub Objects
Custom Object Grid Portlet - Create New, Return to Portlet not Object List View
The Clarity GUI back button is too small to hit reliably in a hurry so for most 'back', I use the Browser Back button. However, I do find the history/breadcrumbs dropdown very useful and do use that extensively.
Retrieving data ...