If we analyze the recent web history, one tendency is increasngly growing, and it is social networking. From some time now, they are becoming more and more important for all the web users. It is known that the tendency is an even bigger growth, as it blends with our daily lives. Websties like Facebook allow users to place pictures and tag friends on them, providing that a single picture may keep people entertained for hours. Twitter allows people to keep in touch with people they admire, by using small texts. LinkedIN is somewhat directed to professional networking and Tumblr is the so-called natural evolution of the blogs as we know them.