I had the same discussion with a new parking management company at my apartment complex. I told them I wasn't going to put confidential information on a site that doesn't use https, and they tried to tell me that they used a third party for authentication so my data wasn't stored there... I don't even know how to explain to them.
"You're telling me that once you have my information you throw it away immediately. That's great, but you are still forcing me to give you my information in the first place by standing in the middle of the street yelling it through a loud hailer".
