Blippy.com can show a private investigator what online purchases people make using a debit or credit card.
When you register with Blippy, you provide some personally identifiable information to us, such as your name, username, password, and email address, and any other information or data that you provide to the Services, such as the login credentials for any of your webmail or social networking site accounts that you link to your Blippy account, or any of your accounts on websites that you make purchases from which you link to your Blippy account. Personally identifiable information that we may also collect in order to provide the Services may include your IP address, city, time zone, telephone number, and other information that you decide to provide us with, or that you decide to include in your public profile.
Your user name and image, if you decide to upload one, are displayed to people in the Blippy network to enable you to connect with people on Blippy, as specified in your privacy settings. Once a member, you may provide additional information in the profile section, including but not limited to your bio, your location, as well as your personal web site, if you have one. Providing additional information beyond what is required at registration is entirely optional, but enables you to better identify yourself and find new friends and opportunities in the Blippy system. You may customize your account with information such as a cell phone number for the delivery of SMS messages or your address book so that we can help you find Blippy users that you know. Our services are primarily designed to help you share information about your purchases with others. This information will be public by default, but you may make it more private by editing your account settings. You should be careful about all information that will be made public by Blippy.
Link: http://www.blippy.com/