Blibby policy says "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." I do not see lots of reason to sign up for this service in the first place. With the social media interconnecting all the data even on a passive way which the F8 from FB hinted it we are heading into a direction were someone has to be more careful with personal information.