Probably German-Marks. The German Mark was used far outside Europe, and many of these users have followed the switch to Euro's. (Or dollars, since most people will make exceptions for money)

The switch to Euro's would have been the perfect event to get rid of all existing black money, I don't remember that having happened. I even read somewhere that converting all black-money to euros (unreported savings, plain money-laundering but also large criminal assets) was crucial for making the switch a success.

If Obama had a switch to instantly prevent the use of dollars in illegal activities and unreported savings anywhere in the world, would he touch it? I think the result would not be pretty.
It's well worth trying to minimize questionable use of a currency, but in the end, currencies need to be exchanged more-or-less without restrictions, or it isn't a real currency any more.

If I read it correctly, the purpose of the EBA was to mandate regulations, to prevent that banks needed to compete with cheaper banks in countries with less regulations. They would have named it European Banking Cartel, but then even the name would have been almost the same as the ECB :-)
It's these guys job to discourage bitcoin, I don't know what took them this long.

sorry, I somehow switched my graph to a different exchange.
(360 seconds over yet?)

The 600 wall at stamp was pulled, so just a smooth ride up :-) (looked at wrong exchange)

4) Profit from investing is taxed differently from profit from day trading in some countries. (0% and and >40% in my case)
    (I also pay an additional 1.2%/year property tax over my bitcoins, but that's peanuts)
5) some people trade through websites that provide instant exchange between national back accounts and BTC, but have a relatively high fee of 3 to 5%, both ways, making day trading too expensive.

HODL'ing (and buying 1 BTC or less, if the price drops more than $30 below my last buy).

He made 1000's of posts, all exactly 1 hour apart, 24/7. If he isn't a bot, he never sleeps...
(have you clicked the "explanation" link?)

It's anyone’s guess what this man would do with the donations, but everyone here would agree that a donation from anywhere in the world to this Ukrainian man (in a country with a bit of a situation) would totally work, work quickly, at low transfer cost, and not end up in someone else pockets along the way.

Bash alarm script in case you have something that runs Linux:  http://pastebin.com/iRYM4iZg
(I now have a cheap coin   )
edit: added missing last "done" line to script

Nice. a large Dutch bank decided that the only way to do software upgrades is by closing all payments during the whole night. Can't get at my Euro's for another 4.5 hours (with a bit of luck). Bitcoin turns out to be a whole lot more reliable than my local bank 

Taxes help too:
Sell too soon: -> "trading" -> income -> 52% tax over profit. (and 1.2% property tax)
Hodl: -> "investment" -> interest -> 1.2% property tax over the Jan 1st Euro value of the bitcoins.
(a good nick helps too.)

Thanks proudhon, it worked. After months of lurking I finally subscribed.