Definitely losing my wallet identifier with 0.5 BTC contained in it 
I hate when you think that you've backed up something sufficiently, only to realise after you try to login that something extremely tragic has happened. I've got my password ready but I haven't got my wallet identifier on blockchain.info! Always back it up with your email...
I hate when you think that you've backed up something sufficiently, only to realise after you try to login that something extremely tragic has happened. I've got my password ready but I haven't got my wallet identifier on blockchain.info! Always back it up with your email...