A every useful post at LifeHacker. If you've ever tried copying and pasting a multi-line address into Google Maps just to realize that an input box will only take one line at a time—meaning that you have to copy and paste each line individually—there's a simple Firefox tweak that will solve this problem:
Of course, this tweak works for any input box, so if you've bumped up against the multi-line paste problem elsewhere, consider it a problem of the past.