http://fincen.gov/statutes_regs/guidance/html/FIN-2013-G001.htmlso reading the guidelines. it is clear to me, that we do not have to worry.
Relax everybody, they just want to catch the people buying large quantities of World of Warcraft Gold, or Bitcoins.
They clearly made it into a regulation instead of a law, because they want casual people to use it for what it's intended for, buying stuff at your favourite merchant or buying virtual items...
they do not like people using it to launder money, from one location to another, the only way to do that is to exchange those bitcoins into cash, effectively your cash has just been cleaned, new cash new serial numbers to track.
though Bitcoin is a very bad option for that... the BlockChain ledger.
and don't forget the Guidelines apply to Fiat Currencies too... so if your exchanging money... they want to talk to you about your activities.
so your Golden, they want you to register, they want exchanges to comply, use virtual currencies freely, but please let us make sure you are legit, buy whatever you want, it's not illegal, exchange your currency, if they want to be dicks later, just don't do crazy 10,000 USD transactions.