The scenario is all too common: An application brings up a dialog box while you are typing, and you hit the space key before you even realize what's happening. The dialog is gone and you have no clue ...
What is the best acknowledge UI? Ie. confirmation by the user. 1) A simple checkbox on a form or 2) A pop-up with a message and OK/Cancel buttons
Thanks to Gabriel Svennerberg and Sam K for this one - raised in a comment here. I was fairly casual about alert boxes until a run of user tests where an alert box was put up to warn learners that ...