Oil prices dropped, that's why RTK is down today. Once the price of oil stablizes, RTK should stop going down as well. And it looks like we're seeing a floor in oil around $60/barrel, so we shouldn't have too much further down to go.
All it takes is one announcement from the government about how we're addicted to oil and we have to move away from sources of foriegn oil to send this thing up past $6. Hold on, don't let these shorts scare you!