 color: blue; font-family: 'Arial','sans-serif'">Social networking has the new ways to communicate &amp; share a lot of information. Main focus of a social networking service is to build online communities of people who share interests &amp; activities. <o:p></o:p></span><span style="font-size: 10pt; color: blue; font-family: 'Arial','sans-serif'">- Application: MySpace &amp; FaceBook are typical services trying to sell them thru online advertising on their site. These semantic social networking services ca