I'm a student from social computing class at ischool at University of Pittsburgh. I think this is a fairly good article with rather good words. I think one can work more on the images. The whole page has no images to help illustrating the knowledge. Besides, some secondary titles don't seem to be appropriate. For example, the tile "privacy concerns' has little connection to its content. Also, the structure can be improved. Like the storage part and the concerns parts, we may set up new category "Causes" and "Concerns" and put these parts inside. Last but not least, I believe we can find more about concerns and add something about how to avoid privacy problem on the internet.