1. Expressing Social Relationships on the Blog through Links and Comments March 27, 2007 - Boulder, CO International Conference on Weblogs and Social Media Noor Ali-Hasan Microsoft Lada Adamic School of Information University of Michigan

6. Community Structure

7. Three Blog Communities image source: http://www.lib.utexas.edu/maps/ Boulder DFW Blogs Kuwait Blogs UAE Blogs

9. Link Type Overlap for Kuwait Blogs comment links blogroll links in-post links 664 131 325 143 25 48 98

10. Density and Centralization Q8 UAE DFW citation 2.08 1.37 0.37 blogroll 6.25 2.65 1.79 comment 5.10 N/A N/A centralization of the combined blogroll and post citations network indegree centralization 0.18 0.30 0.04 outdegree centralization 0.30 0.67 0.55

11. Within-Community Blogroll and Citation Links DFW UAE Kuwait

12. Reciprocity Kuwait UAE DFW post citations 19% 16% 26% blogroll links 32% 43% 27% comments 43% N/A N/A

13. Community Structure Kuwait UAE DFW maximum modularity 0.24 0.22 0.53 number of communities at maximum modularity 7 6 10

14. Community Boundaries DFW UAE Kuwait

15. Porosity of Community Boundaries Kuwait UAE DFW internal post citations received 79% 24% 16% internal blogroll links given 47% 22% 9% non-anonymous comments received from bloggers within community 42% N/A N/A

16. Online and Offline Relationships

18. Motivation Behind Blogging

20. Intersection of Blogging and Offline Relationships Q8 UAE DFW Few or none of the comments received are left by people known offline 79% 81% 66% Few or none of the comments left on other blogs are on blogs of people known offline 74% 94% 65%

21. Using Blogs to Sustain Real-Life Relationships with Non-Bloggers Q8 UAE DFW Few or none of the comments received are left by people who do not blog but whom they know offline 99% 94% 79%

22. Using Blogs to Maintain and Form Relationships Median number of bloggers listed on blogroll and: Q8 UAE DFW Met in person 5 5 2 Emailed 5 10 12 IM’ed 6 2.5 2