The most striking result of the expansion of social networking sites in the past few years has been the numerous legal questions regarding privacy policies. Some frustrated users have abandoned the sites over concerns that their information will be shared without their knowledge, while the sites' executives have insisted that they are constantly upgrading the tools users can employ to make sure what is private stays private. In the end, it seems unwise to assume that anything uploaded to a social networking site will remain unseen by those who are not permitted to see it. If you choose to post a picture on your page, make sure it's something you don't mind sharing with the world. This passage is mainly about