Trading DRK for profit is a big gamble now. I would hold on to as much DRK as you can. As soon as more people realize that LTC has nothing on DRK there's only one direction to go. With hundreds of alt coin out there, there are only a rare few that have some exceptional features. These features combined with a fair spreading of stake and not being randomly cloned makes them worth wile. DarkCoin together withe a few others (like eXo big time and maybe Monero a little) are here to stay imo.