Retailers who are not using Bridge often share with me that they are selling online and receiving a customer's credit card information in an e-mail. That is a huge liability for the retailer in this day of hacking, just see what happened to Target.
An idea: ask business friends if they are taking credit card information via e-mial. If so, mention that there are easier, more secure ways to take payments digitally, such as via Authorize.net. They'll thank you for it, before they become a 'target.'