We have all read stories of coins being sent to wrong addresses (typos or badly copy and pastes)
What would you do if 100 Btc landed into your account? (unfortunately this has not happened to me yet)
May be I will send it back but I will reconsider about this thing one more time, may be bitcoin billionaire only want to donate it to me. The first step is try to find the person who send the bitcoin. May it will little bit hard but I have to do all my best.