OK, let’s say you want to explain something really difficult, like counterfactual computation with quantum interrogation, but you don’t want to actually sit down and do all that typing (let’s say you have a big stack of lab reports to grade, or something). There’s a way to pull this off.
What you do is, you put yourself in a superposition of states in which you explain and don’t explain this phenomenon, and then don’t touch your blogging software (that would constitute an observation, and collapse your wavefunction) for a day or two. When you come back, you’ll find that an explanation has already been posted. With puppies, even.
The Internet is a weird and wonderful thing.
(Update 2/28/06: Scott Aaronson weighs in as well, with a good classical analogue.)