The website CreditCards.com did a survey of the contracts of the major credit card issuers. It then ranked them based on their FOG index (Frequency of Gobbledygook).
Here's is their 10 most unreadable credit card contracts
Interesting to see credit unions make up 8 of the 10. The one with the worst contract is GTE Federal Credit Union. This is the same credit union that began charging members
if they use the PIN-based option instead of the credit-based option for debit card purchases.