Personally, I avoid Coke and Pepsi because I don't like the way they taste. I've never seen anything corroborating the pork thing, though. The article itself seemed rather suspect, with little referencing and some rather silly statements (e.g. "Also drinking 6 bottles of Pepsi or Cola at a time causes instant death"). Here's the source of the article.
The scientific and medical research says that drinking Pepsi & Cola leads to cancer because the key element is taken from Pigs sausage. The heavenly books Quran, Bible and Torah forbids eating Pork, as it is the only animal that eats dirt, dung and urine, which makes lethal and deadly fabric polluted germs and microbes.
According to a report published in Jordanian magazine, the head of Delhi University's Science and Technology Center, Dr. Mangoshada scientifically proved that the key element in Pepsi and Cola contains extract from the intestines of Pig which causes cancer and other deadly diseases.
What do you think? Believable? Far-fetched? Silly? Well, it's no good for you anyway, so best to avoid it.