Have you ever accidentally send Bitcoin to the wrong person? Or sent the wrong amount?
I did. Like a fool. Last night I was playing around with it and falling asleep at the same time.
I tried to upload 17 bitcoins to Mt.Gox... but I went to my addressbook and saw one unlabeled address. Thinking, oh that must be the new address just created, I'll use that one... I sent it to that address. Of course, instantly I remembered that it creates new addressed when RECEIVING money, not when sending it. Duhhh. I went back to Mt.Gox and it just has a box to enter the amount. Only AFTER you submit that, then it tells you the address to send it to.
Oh well. One of my contacts received a surprise of 17 BTN last night. Paying it forward.
What would I do if it had been 170,000 BTN....?

I might not be so happy letting it go then....
PS - Is the proper abbreviation BTN or BTC or BCN? I can never remember.