I have personally used the Prove It service twice. I first used it to address rumors of negativity tied to the history of a car. Upon research by David and the Prove It team, the negative commentators never provided any fact to qualify their remarks and upon being enlightened by the Prove It process, they actually ceased their negative campaign altogether.
The other instance that I found the program greatly beneficial was in regards to a car that had, for decades and through a dozen magazine covers, been misidentified and its history misreported.
It was not the car it had been presumed to be for more than 20 years. Prove It was able to identify where the misidentification first occurred. It became easily apparent how the mistake was made, and it was never anything malicious. The car subsequently turned out to be a wonderful car with a great and true story of its own.
I would confidently use the Prove It method again if the need arose.”