One of the correspondents to that site sums it all nicely.

escravos56 says:
April 23, 2013 at 9:35 am
The vehicle that the Tsarnaev brothers carjacked was a Mercedes. Mercedes is made by Daimler A.G. What letters come between A and G??? Does the letter C ring a bell (as in CIA !!!). What is even more interesting is that if you flip around A.G., you get ‘G.A.’ and everyone knows that G.A. stands for Government Agency. Since the CIA is a Government Agency, then it proves that the alleged owner of the Mercedes that was car-jacked was actually a CIA operative who lured the Tsarnaev brother into the car by offering to give to give them money from the ATM. All of the above proves that the whole thing was an inside government job carried out by CIA and other government operatives because lets face it, why else would someone leave their phone in a car after being kicked out by 2 carjackers. The only logical conclusion is that it was done so other government operatives could use the phone GPS device to track down and ultimately frame both suspects.

Lastly, there can be no doubt that this is a FALSE FLAG OPERATION. First and foremost, it is common knowledge that the U.S. Govt dislikes the Russians. Therefore, the Tsarnaev brothers were an obvious target of the Secret Ops people (CIA, FBI, etc…). The first four letters of their last name is “Tsar”. The last Tsar of Russia (Tsar Nicholas II) was our enemy in WWI (who we defeated and essentially de-throned). Because of this bitterness towards the Tsar, the US Govt. mistakenly associated Tsar (in Tsarnaev brothers) to the Russian flag which is Blue and Red. In reality, the Tsarnaev’s native flag is the Chechnya flag consisting of Green, White, and Red. Unfortunately, it was not until the older brother was killed and the other one captured that the Govt. Ops people realized they associated the Tsarnaev brothers with a false flag since they were from Chechnya and NOT Russia

But nooooooo, the American people will simply not listen to the truth...