n vary from advertising to dating and medical application. Companies can use social networks for advertising in the form of banners and text ads. Since businesses operate globally, social networks can make it easier to keep in touch with contacts around the world.<o:p></o:p></span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sans-serif'"><o:p> </o:p></span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sans-serif'">Currently, main focus of social networking service is 