Why was my question deleted?

One of the first questions I asked on this site was "What do you know about PayPal?" I was faced with possibly of having to use it at the time (I didn't), and I wanted to know what some of the pros and cons of the system were before I entrusted these people with my money. Less than a day later, Yahoo!Answers yanked my question. Why? I didn't post anything slanderous or offensive, I was just looking for information from people who have delt with PayPal before. What could possibly be the reason for shutting me off?