See some people have not contacted lawyers before jumping into bitcoin businesses, if you contacted your lawyer before doing business in bitcoin, you would know it was always legal.
It's about the law going forward. Nobody had any certainty about that before. Jesus, you're such a fucking buzzkill 
tl;dr... bitcoins are legal
Yeah, I've been jumping with joy for the past 10 minutes When was bitcoins ever illegal? LMAO I was jumping for joy over 2 years ago when I got into bitcoins, cause they were never illegal.
They've been a legal gray area since they were created. We've always known that the Government would get into regulating them someday, but nobody knew what form that regulation would take. They could be all but ignored or they could do their level best to squash it like a bug. I believe this is a good sign in that it seems to be pretty light regulation and provides some security - the more official recognition Bitcoin gets, the less likely the Government is to try to crush it.
Another two people who never talked to a lawyer before getting into bitcoin, it isn't a buzzkill, if the news was the other way, I be very sad, but we are talking about something that must people already knew. Bitcoins are legal, and if your exchanging a high volume of them get your wallet out and license up. Nothing new here.