Quick question - from someone who hasn't looked at bitcion since it was between 10c and $5 - since your transaction doesn't clear until the block propagates how they handle double spends?

The same way that restaurants make sure you pay instead of just leaving the building. It's mostly just not worth the hassle to save a few bucks.

Double spends are overwhelmingly a theoretical issue. Credit card fraud, on the other hand, is pandemic.

>In my neighborhood there are bars that accept Bitcoin.

Something tells me you don't live in Nebraska.

>Quite convenient in a city where you usually can only pay with cash...

How is it more convenient than cash?

You cannot back up cash

You cannot securely send cash across the globe without depositing it into a trusted third party

You cannot program physical cash

Are you just listing a few random ways that Bitcoin is more convenient than cash? The OP was about spending money at a bar.

But okay, here's how cash is more convenient: I can walk outside my office and use this dollar bill at any store anywhere around me. It has apparent value to everyone I will talk to. I don't need the internet.

If you need to "program" or "backup" your money, I guess Bitcoin is your medium. No argument there.

Which neighborhood are you in?

He's probably in Berlin