1. Feeds That Matter A Study of Bloglines Subscriptions Akshay Java Pranam Kolari, Tim Finin, Anupam Joshi, Tim Oates

2. Outline Background and Motivation Bloglines General Statistics Grouping Related Topics Applications Conclusion

3. Bloglines Feed Reader Folders Use folder label as approximation for topic. Group similar folders together Rank Feeds under a “topic”

4. Motivation Study user generated tags in feed reader subscriptions Find relevant blogs about a topic Needed labeled, training data for building text classifiers for different topics Tag Cloud generated by using folder names and merging related folders

5. Outline Background and Motivation Bloglines General Statistics Grouping Related Topics Applications Conclusion

6. Bloglines General Statistics 83K publicly listed subscribers 2.8M feeds, 500K are unique 26K users (35%) use folders to organize subscriptions Data collected in May 2006 Although there may be ~ 50M+ Blogs, only a small fraction get continued user attention in the form of subscriptions Users subscribe to Web 2.0 content such as flickr, delicious, technorati and google searches

7. Bloglines General Statistics Feed Subscriptions follow a power law distribution

8. Bloglines General Statistics Most users subscribe to modest number of feeds Most users have only a few folders User attention is limited

9. Bloglines General Statistics As subscriptions increase, users tend to organize them into folders.

10. Outline Background and Motivation Bloglines General Statistics Grouping Related Topics Applications Conclusion

11. Bloglines General Statistics A folksonomy emerges from the folder names. Many users use popular folder names to classify feeds. technologica Musica Weather Email, Mailing List, Tracking Foreign Language

12. Tag Cloud Before Merge

13. Tag Cloud After Merge Folder names are used as topics. Lower ranked folder are merged into a higher ranked folder if there is an overlap and a high cosine similarity.

14. Merging Tags Interesting Cases: Music vs. Musica : English and Spanish Music sites Podcasting vs. Podcasts: One refers to the tools for podcasting while the other feeds containing podcasts Regional Interests: China, Japan, India, etc. Foreign Language: Spanish, German

15. Feeds That Matter Top Feeds for “Politics” Merged folders: “political”, “political blogs” Talking Points Memo: by Joshua Micah MarshallTalking Points Memo: by Joshua Micah Marshall Daily Kos: State of the Nation Eschaton The Washington Monthly Wonkette, Politics for People with Dirty Minds http://instapundit.com/ Informed Comment Power Line AMERICAblog: Because a great nation deserves the truthAMERICAblog: Because a great nation deserves the truth Crooks and Liars Top Feeds for “Knitting” Merged folders “knitting blogs” Yarn HarlotknittingYarn Harlotknitting Wendy Knits! See Eunny Knit! the blue blog Grumperina goes to local yarn shops and Home DepotGrumperina goes to local yarn shops and Home Depot You Knit What?? Mason-Dixon Knitting knit and tonic Crazy Aunt Purl http://www.lollygirl.com/blog/

16. Most Subscribed Feeds, Top Folders 1.Bloglines 2.Wired 3.Slashdot 4.BloingBoing 5.Dilbert 6.Gizmodo 7.Engadget 8.Official Google Blog 9.Alist Apart 10.News: CNN, Reuters, Moreover 1.News 2.Blogs 3.Tech 4.Comics 5.Politics 6.Podcasts 7.Design 8.Sports 9.Science 10. Business Top FeedsTop Folders

17. Tag Merging Folder names are used as topics. Lower ranked folder are merged into a higher ranked folder if there is an overlap and a high cosine similarity.

18. Outline Background and Motivation Bloglines General Statistics Grouping Related Topics Applications Conclusion

19. FTM! Site http://ftm.umbc.edu Explore Popular Topics Subscribe To Interesting Feeds If you like X you will like…

20. Feed Recommender (Method 1) Two feeds are similar if they are categorized under similar folders Politics Business Technology knitting

21. Feed Recommendation (Method 2) Start with a seed set from FTM! Using, graph from WWE dataset, find nodes influenced by the seed set Find other blogs frequently co-cited by the followers Blogs influenced by seed set

22. Feed Recommendation Using Co-citation PoliticsKnitting

23. Outline Background and Motivation Bloglines General Statistics Grouping Related Topics Applications Conclusion

24. Conclusions Folder labels can be used to produce an intuitive set of topics for feeds or blogs Subscription information combined with simple techniques can be quite effective in ranking blogs for a topic. Many useful applications such as feed recommendation and meme trackers can benefit from this data.

25. Thanks! “Want to find a few good feeds? Try Feeds That Matter, an interesting grouping of publicly listed feeds at Bloglines’’ delicious user skyamese skyamese Easy way to find good blogs - delicious user kc144 Provides a "swarm" with keywords on subjects which will take you to a list of blogs/sites relating to that keyword. All are rss feeds delicious user damenjoe.damenjoe kind of a meta blog delicious user frontporschefrontporsche Find how to classify your feeds and find new feeds based on tags - delicious user inf Links to loads of good RSS feeds. hmspolio …it's a great example of a technique for extracting usefulmetadata from the world - JD on EP blog …find information and resources that have already been filtered by like minded people – Tryangulation blog It brings you popular feeds from Bloglines in different categories and I found almost all the popular feeds in appropriate categories out there. Worth paying a visit – netgautam blogger Nothing better to read online? Feeds that matters gives you loads of highly rated feeds in all category ….great source for some quality content for a blog or just for browsing. Blendedblog blogger University Study Reveals Rich Data on Bloglines Feeds Feeds That MatterFeeds That Matter is a fascinating new analysis project out of UMBC and a terrific way to find new RSS feeds to subscribe to.. - Steve Rubel, Micropersuasion blog 600+ bookmarks on delicious & more…

26. Backup

27. Feed Recommendation (Method 2) Starting with a seed set from FTM! Find other influential feeds from Blogpulse data, using co- citations. www.dailykos.com Blogs influenced by seed set