 A. Information you voluntarily provide us We collect and maintain information that you voluntarily submit to us during your use of the Sites and Services. For example: when you register for a Site, you may provide us certain information including your name, email address, screen name, password, demographic information and the health topics that interest you; to engage a Site's social networking function, you may add to your profile by providing information about your interests or health topics. For example, your profile may list your favorite healthy foods or movie; if you are registering for a customized weight loss program, you may provide us answers to questions we use to provide you the program, like your actual and goal weights, your preferred method of exercise, or your caloric intake; if you sign up to receive a newsletter, enter a contest or participate in social networking activities, you may provide us contact information (e.g., email or physical address); if you purchase a product or service, you may provide us your credit card information; and you may provide us with Personal Information in the course of email, customer support interactions and surveys. 