Those who make any gains should inform the IRS or they will be facing criminal charges.
This then will apply to all crypto coins.
What's more, the government will no doubt be seeking out and testing out ways to track bitcoins in order to ensure US Citizens around the world notify and pay their correct taxes.
http://blogs.wsj.com/totalreturn/2014/03/25/qa-the-new-irs-rules-on-bitcoin/
Everyone please pay your taxes. Do not attempt to hide your crypto wealth with DarkSend. That's just not playing fair or giving the IRS a sporting chance.
LOL!! =) IRS ain't gettin' SQUAT. Sell your BTC on craigslist for CASH.