Possible Oil Price Manipulation? No Shit?

The feds are investigating the possibility that oil prices are being manipulated...

http://www.consumeraffairs.com/news04/2008/05/gas_prices246.html

I don't think there really needs to be an investigation on this one, it's pretty obvious. What's next? Will the feds investigate the possibility that water is wet?

Source: http://www.dvorak.org/blog/2009/05/28/feds-probing-possible-oil-market-manipulation-oh-wait/