1. © people & data | www. weigend. com Andreas S. Weigend, Ph. D. 韦思岸 教授 The Networked Economy (20): Information Management, Strategy, and Innovation 网络经济 : 信息管理, 战略, 和创新 Social Networks and the Science of Designing Interactions

2. Put in Arun slides

3. 3 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 来源 Source: langreiter.com

4. 4 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 20 years ago: Produced news E.g., Walter Cronkite “Veroeffentlichte Meinung” 10 years ago: Web Search: Already know what you are looking for Discovery: Serendipity: Find something you didn’t know you were looking for Now: Friends Facebook leverages the social graph, via people they are connected to

5. 5 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 Total unique visitors (in millions) Worldwide daily visitors (in millions) Source: ComScore Networks 2007.07.31 Unique Visitors 2006.06 Unique Visitors 2007.06 Daily Visitors 2006.06 Daily Visitors 2007.06 MySpace66114 +72% 16.828.7 +72% Facebook1452 +270% 3.714.9 +300% Hi51828 +56% 2.94.7 +65%

6. 6 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 “Facebook is a social utility that connects you with the people around you.”

7. 7 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 | Jan 1, 2007 | Jun 30, 2007

8. 8 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 | Jan 1, 2007 | Jun 30, 2007 (billions, worldwide)

9. 9 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 Activity 2007.06: Events: Over 130 M invitations sent June 2007 115 M unique recipients 30 M unique senders Photos: 270 M photos uploaded In total, over 2.5 billion photos uploaded by June 2007 Gifts: Over 500k gifts purchased June 2007 Comparable to CyWorld (Korea): Sold virtual items corresponding to USD 100M in 2005

10. 10 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 Launch date: 2007.05.24 6 weeks after launch 20 M users have installed at least one Platform App 2 M apps added per day 30k registered developers 1.5k aps in the Application Directory AppInstalls 1. Top Friends7,802,767 2. iLike4,341,452 3. Graffiti4,311,757 4. Fortune Cookie4,210,408 5. Horoscopes3,984,332 6. X Me3,740,061 7. SuperPoke!3,525,134 8. Free Gifts3,341,824 9. Video3,135,625 Movies2,844,369

11. 11 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800

12. 12 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800 Bridges between online and offline Facebook culture based initially on verified email identities from university emails Supports offline through online / enhances online through offline Social norms carried over from real life to Facebook Influencers Can we identify people who drive adoption of a product or a group? Sentiment analysis What are people saying on discussion boards? Who is positive about an issues, who critical? Cross-media analysis Understand links across TV, music, movies, internet, etc.

13. 13 © people & data | www.weigend.com | +1 650 906-5906 | +49 174 906-5906 | +86 138 1818 3800