16. • Communities of people who share interests and activities •Social networks connect people at low cost
17. Most social network services such as chat, messaging, email, video, voicechat, file sharing, blogging, discussion groups, and so on.
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19. • self-publishing within your network of friends and colleagues. •what to listen to, what to watch, what's groovy
20. • The people's television network •It is being acquired by Google for a mere 1.65 billion dollars in stock
21. • Social Bookmaking •provide interesting and usually high quality web links (which users voted for) •a real-time record of who is interested in what right now
22. Wikipedia •Probably the best encyclopedia in the world •1.5 million user-contributed articles.
23. P2P •Share your computer power with everyone else in order to deliver their service •Peer to Peer
24. eBay •This is not normally thought of as having a social network element •1 million people worldwide make a living from eBay
25. SecondLife •3-D virtual world •makes money by selling virtual real-estate for hard cash •Several major companies have set up shop in SecondLife
26. World WarCraft •Hugely popular Internet-based multi-player game •Most successful of several virtual worlds that the Internet has spawned •very powerful (and commercially successful) social network
27. F reecycle •This is a goods recycling service that enable people to give away possessions that they no longer want and need.
28. Your Business •Social networking sites have become big business •can, your business take advantage of these social type site