Because of social networking, people can be connected with their friends, groups or families online.
Social networking sites are one of the easiest ways of communicating our loved ones.
To keep in touch with them, reconnect with our old and long time friends that we haven't been seen for a longest time.
Also because of this we are free on the ideas of getting friends virtually.
We can also create real-life friends with similar interest and groups.
Consequently, this is important in establishing social relationships.
The members in social networking can share common interests with each other.
They can have the opportunity to converse with the people who have the same fascination as them.
Besides, social networking sites can additionally help its members to find a job, a living or giving businesses a chance to establish its venture and so with establishing business contacts.
These websites have a lot of additional features.
They can have blog sites where one can have the opportunity to post their blogs and forums where its members can freely express themselves.
  The members can also have the chance to design their profile page in accordance to their choice and personality.
One of the trendiest extra features of these sites includes the music and the video sections.
Other members can read their friend's profile while the same time listening to their favorite music and watch videos.
These are the common things we see in social networking sites:

• It has profiles.
  This is what they call "heart and soul" of the social networking sites.
  Profiles are regarded to be the members' own internet sanctuary.
  
• Security.
  These sites havean additional feature of reporting and block users who are violatingrules.
  
• Search.
  To find friendsand expand relationships.
  
• Legitimate Friend Focus.
  What made these sites enjoyable is for the reason that it communicates us with the people we already know and the option of keeping in touch with them.
  

Moreover, 15 most popular sites are the following:

• Facebook.
  It was at first made for the intentions of college students to branched out but now, having 150 million users worldwide, it allows everyone membership.
  
• MySpace.
    Defined asthe massive and daring the largest membership the internet's socialnetworking sites.
  
• Linkedin.
  Having 12.
  5 millionmembers and is widely used as a powerful business networking tool.
  
• Friendster.
  Considered tobe the top online social networking service.
  
• Stumbleupon.
  Allows usersto discover and rate webpages as well as photos, videos and news articles.
  
• Del.
  ici.
  ous.
  a social bookmarkingweb service.
  
• Digg.
  Made for discoveringand sharing content from the net and submitting lings and stories.
  
• Orkut.
  Designed to helpthe users meet new friends and maintaining the existing relationships.
  
• Twitter.
  Allows sendingupdates to users by using SMS, instant messaging and e-mails.
  
• Classmates.
  Oldest socialnetworking sites.
  
• Meetup.
    Facilitatesoffline group meetings in the various localities around the world.
  
• Yahoo! 360.
  A personal communicationportal.
  
• Xanga.
  Free Web-based service that host weblogs.
  
• Care2.
  Connects activistsaround the world.
  
• Ryze.
  Designed to link business professionals.