The chinese government is going to ban all vendors from doing transactions with BTC. Its already in the works, look it up at google.hk

Also, alot of you people who have this idea. That bitcoins will be used as a medium for transactions throughout the world are very wrong.

FYI- The Internet is about to be broken up, and not interconnected with the world soon.

Alot of you members havent heard about this, and the news media hasnt even talked about it.

But after the NSA spying scandal. All governments throughtout the world are building there own INTERNET system, seperated from the USA internet.

The world wide web will be dismantled in the next.2-3 years, so it will be impossible for BTC to be used
  from country to country.

Each country will control of its own internet. So this dream that BTC will be used for.transactions.everywhere is dead.

Souce-

http://voiceofrussia.com/2013_10_28/BRICS-countries-are-building-a-new-Internet-hidden-from-NSA-7157/