When you read a lot of coins which get lost or stolen you get a little bit paranoid. There are so many threads about storing bitcoins safe and secure(paper!). But what if you want to buy a car and the car seller does not accept bitcoins? How woud you change into fiat? With what client will you send it to the exchange? Would you rather use the bitcoin.org client (and download the whole blockchain) or an online client?
And maybe a little bit offtopic: How to do this with altcoins, where you dont' have 100 different clients?
Suggestions?
Thanks
