They likely only declared bitcoin taxable so they can get a cut of the silkroad auction.
Huh? It's always been taxable, we were just uncertain as to how. Now that uncertainty is gone.
Not sure what you mean by "It's always been taxable". If you mean the IRS will always want to steal, then I'd agree. If you mean that they were always owed, then you're wrong. If you mean they've always been able to collect, then this thread proves that wrong.