1) The document discusses social bookmarking sites like Delicious, Digg, and Diigo and compares their features for public and private use. 2) It recommends Delicious for a combination of public and private use due to its large user base and ability to organize bookmarks and friends into groups, though it does not fully meet the needs of either. 3) Diigo is recommended for private use and collaborative work within an organization due to features like annotation sharing and consistent tagging through group dictionaries.

1. Embracing Web 2.0: Social Bookmarking A study by Ida Rosenthal Source: http://www.frontiernet.net/

2. The Web 2.0 Movement Web 2.0 is the second generation of web development and web design with a focus on: communication information sharing collaboration user-centered design two-way interactions

3. What is Social Bookmarking (SB)? SB is a method for users to store , organize , and search , bookmarks of web pages on the Internet Most social bookmarking services allow users to organize bookmarks with informal metadata, usually called tags

4. What kind of info can we find? Social bookmarking URLs are full of new and fresh information Delicious has little redundancy in page info for ~50% of URLs and high redundancy for ~20% Tags are pretty accurate % of Tags Users Found Irrelevant: 7% % of Tags Users Found Subjective: <5%

5. Who ’s Who in Social Bookmarking Digg.com Considered the #1 SB website 1 1 &quot;Top 20 Social Bookmarking Sites| June 2009.&quot; The eBusiness Knowledgebase . June 2009. EBizMBA. 15 June 2009 < http://www.ebizMBA.com/articles/social-bookmarking >. 2 Arrington, Michael. &quot;Feature Overview of Delicious 2.0.&quot; TechCrunch . Sept. 2007. 16 June 2009 <http://www.techcrunch.com/2007/09/06/exclusive-screen-shots-and-featureoverview-of delicious-20-preview/>. 3 The eBusiness Knowledgebase Flickr.com Primarily hosts image and video content Delicious.com Has more than five million users and 150 million bookmarked URLs 2 ; it ’s the 6 th most popular SB website. 3 Stumbleupon.com Personalized recommendation engine; “channel-surfing” Reddit.com Like Digg, allows users to rank links, causing them to become more/less popular Diigo.com Allows users to highlight web pages, attach sticky notes & share annotations

6. The Tragedy of Ma.gnolia Ma.gnolia.com was a popular SB website that launched in 2006 Largest rival to Digg and Delicious Owners maintained the hosting themselves Lost half a terabyte of data Lost most primary files and backup too Data corruption closed early 2009 w/ plans to reopen late 2009

7. Advantages Public Both Private (w/n OCGR) 1. Ppl can find & bookmark web pages that haven ’t been noticed by automated computer programs 1. More intuitive ( “human touch”) 1. Information gathered from rankings  useful web metric 2. allows for exploration and more browsing 2. automatically generates “related” tags 2. Consolidates bookmarks from various computers and share bookmarks with contacts 3. Makes users more comfortable with content 3. allows users to quickly share news about events in real time 3. search engines will discover the link to the page each time it is posted at one of the social bookmarking sites

8. Disadvantages Public Both Private (w/n OCGR) (1) spammers have started bookmarking the same web page multiple times a lot of (unrelated) popular tags (1) mistagging errors can be extensive (1) no mechanism to indicate hierarchical relationships between tags (2) SB can be distracting and confusing (2) no mechanism to indicate hierarchical relationships between tags (2) Catch-22: You cannot get the links if people can't find you, and people can't find you without the links.

9. What Isn ’t Gonna Work? Some SB sites don ’t meet OCGR’s needs on a public or private level: examines technology-related topics similar design to Digg, but not as user-friendly “ channel-surfing” more for entertainment and random discovery does not support articles or documents exclusively photographs and images

10. Let ’s “Digg” In! Cornerstone function: Voting stories up and down “ digging” and “burying”, respectively Very user-friendly  most popular SB website only the most “Dugg” stories appear on the front page Allows user to easily identify information as an article, video, or picture No tags Allows for the user to add friends to a network Cannot organize friends into smaller clusters Difficult to organize personal bookmarks

11. It ’s Delicious (.com)! Previously known as del.icio.us five million users & 150 M bookmarked URLs has a &quot;hotlist&quot; on its home page additional &quot;popular&quot; and &quot;recent&quot; pages help make the site a conveyor of internet trends Allows for the user to add friends to a network; also allows network bundles (smaller groups) Allows “tag bundles” to organize a group of tags Eg. &quot;cats&quot;, &quot;dogs&quot; and &quot;fish&quot; tags may all be put into a bundle called &quot;pets ”

12. &quot;Diigo&quot; is an abbreviation for &quot;Digest of Internet Information, Groups and Other stuff “ Similar to Delicious with several extra features: Allows users to highlight sections, attach sticky notes & share these annotations private, public, or viewable only by members of a certain group Group tag dictionary to enforce tagging consistency A group administrator can define a set of recommended tags to help make tagging consistent Smallest amount of users

13. Recommendation Digg is best for public use because it has the largest amount of users Delicious is the best combination of both public and private use, though it doesn ’t fully meet the needs of either Diigo is best for private use and collaborative efforts within OCGR

14. Questions? Thank You.