301. Do you have your Invisibility achievement? Nope.
302. Did you try doing it in this forum first? I didn't try it, yet.
303. Have you ever wished that you were invisible? Yes. Often times it would've be rather useful for me and not for anything illegal, either.
304. Have you ever wondered if you might be invisible because people overlook you? Not really. I read a book once where that was the case, though. It was very interesting.