I just discovered (1 year too late) the Preview as Admin feature for developing Salesforce Sites. This has got to be one of the more useful things that I wish I had picked up earlier.
Basically, when developing a site and testing it as an anonymous user, error messages are sometimes hidden behind the annoying "Authorization Required" message.
Preview as Admin saves the day by delivering the anonymous user experience, enhanced with a useful description of the errors at the bottom of the page whenever errors appear.
Awesome, indeed. I wonder what other features are out there that I don't know but should know...
