You do know that website is run by lawyers, don't you? I guess they succeeded with you - making you scared and likely to sue if bitten. In addition, for every pit bull bite or attack, there is another by another breed you never hear about. A pit bull attacks someone...front page news or good reading on a sensationalist website. A lab attacks someone...you'll never hear about it.
Plus, there's a staggering amount of scientific studies that have shown pit bulls are no more aggressive than any other breed of dog, leading to both the American Veterinary Society of Animal Behavior (AVSAB) and the American Veterinary Medical Association (AVMA) to issue a position statement against Breed Specific Legislation.
The AVMA statement can be seen here, which is excellent literature for educating the public:
http://avsabonline.org/uploads/position_statements/Breed-Specific_Legislation-download-1.pdf
The AVMA is hardly a biased source of facts.
Here is a report from the American Temperment Test Society:
http://atts.org/breed-statistics/
Go to American Pit Bull Terrier and Anerican Staffordshire Terrier. Their rates of aggression are no different than most breeds - less than average aggression.
Here is a very recent study by the University of Bristol in the UK that surveyed 14,000 dog owners. Breed was not found to be a predictor of aggression:
http://www.sciencedirect.com/science/article/pii/S016815911300292X