Social networking sites....

due to globalization, the use of internet emerged..before, only elder people used to use internet (sometimes).. but as time passed..youngsters started using it..using it for going to certain chat rooms and chatting with unknown people..no young person knew the exact use of internet..as time passed and the needs of people changed..social networking sites were introduced..today, we all know about social networking sites...but some of us don't know the use of these sites..some people just use these sites for adding random people for time pass..some people use them for being in touch with friends who have gone abroad..some people use them for just use them for passing time..
when we hear about some new site that is being used by many people we try to have an id there..it is human nature, we tend to go for every flashy thing thinking that it is gold..some people are judged by their behaviors at these sites..by the updates they provide..the pages that they like..the kind of posts that they share on these sites..
sometimes we are unaware of what change will be brought if we click a single setting that is not known to us..today, nothing is secure..everything and anything that we do is not safe in these sites..i remember using Hi5 in 2005..then i used Orkut..but it was nothing compared to Hi5..i think these sites are good if you use them for the right purpose..know the purpose...n then go for it..according to a survey, Facebook is the top most Social networking Site that is used nowadays..it has the highest number of users..earns the highest revenue..there are other sites too..thanks to Sir Majid Aleem for giving us such an activity...some of the social networking sites are:

how many of these you know about and have used?????