HELP+needed+-+Extra+Credit

**4. Get a wikipedia page up on social data revolution**
//[posted 12 May by aweigend]//

**3. This course wiki**
Wiki should meet the following use cases: - 100 Reporters hear about stanford2010.wikispaces.com, hit the landing page. We want them to be impressed. - Share best learnings from the homeworks. - When/What stuff is due for students. - Students should be able to learn from eachother's projects. - If students need help with something, there should be a place to post where others are there to respond. - There should be a place that serves as a clearing house for good ideas. - End of quarter, wiki should be exportable to socialdatarevolution.com - A single page to highlight insights from the class. No more than 3 bullet points per class period, and should include survey results. - All class periods need to look good. Classes 0-3 are non-existent, and the first few are not so great. 7 onward are great.

**2. Remembered vs actual number of friends on twitter etc** ==** Who wants to write a quick script that extracts the twitter and facebook usernames of the students in class (from the survey you filled out), gets the corresponding numbers either by clicking 100 times, or by writing a quick script, and then creates a table with actual (which you just got), own estimated (you get access to all the survey data), school/major, and possible gender? Would be interesting to see whether people are systematically wrong (and how wrong), and whether we can find gender biases etc. //[posted 07 April by aweigend]// **==

1. Facts about the real time web
Are the following statements true? Can you find references for them? Please annotate here, adding your name so you will receive some extra credit for it)

The cost of creating, sharing and distributing data in real time has become essentially zero, leading to an explosion of user generated content. Currently, every minute, //This seems right. (5 billion/(7*24*60)) Source: http://www.facebook.com/press/info.php?statistics (added by: Sandeep Sripada (ssandeep))// //The number of tweets seen per day: 50 million—that's an average of 600 tweets per second i.e. 36,000 tweets per minute. Source: Analytics team of Twitter - http://blog.twitter.com/2010/02/measuring-tweets.html (added by: Sandeep Sripada (ssandeep))// Every second, around 15 posts are created (so 900 per minute and 1.3m per year) Source: Technorati report: http://www.sifry.com/alerts/archives/000493.html (added by: Alexandre Point) //Every minute, 24 hours of video is uploaded to YouTube.// //Source: Youtube factsheet - http://www.youtube.com/t/fact_sheet (added by: Sandeep Sripada (ssandeep))//
 * 500,000 pieces of content are shared on Facebook
 * 70,000 bit.ly links are clicked,
 * 25,000 messages are created on Twitter
 * 1,000 blog posts go live, and
 * 20 hours of video are uploaded to YouTube.

And the amount of data created by individuals keeps on doubling every 1.5 to 2 years Source:[|http://bits.blogs.nytimes.com/2008/11/06/zuckerbergs-law-of-information-sharing/]Zuckerber's Law of Information: “I would expect that next year, people will share twice as much information as they share this year, and next year, they will be sharing twice as much as they did the year before,” The analogue of Moore's Law (Information Revolution) for the Social Data Revolution (added by Maurizio Calo). //[posted 07 April by aweigend]//

Mobile Traffic Data expected to rise 40-fold over the next five years //Source: http://techcrunch.com/2010/03/30/mobile-data-traffic-rise-40-fold/ [added April 14 by Michael Paulus]//