Kendall / Twitter / ESPN / Facebook / Huffington Post / MySpace / CNN / US Airways / the New York Times / Google / YouTube / Crane / Perez Hilton / Microsoft / Yahoo! / HubSpot / /
Country
Egypt / Korea / Iran / United States / / /
Facility
TRAIL We / /
IndustryTerm
news media / power-law distribution / power-law exponent / social networking aspect / online social networking service / Internet chain letter forwarding / online social networking sites / social networking site / online distribution / instant-messaging network / online social networks / large instant-messaging network / non-power-law follower distribution / social networking services / social media / above networks / mass media / social networking / real networks / mainstream news media / e - commerce / social networks / messenger network / online social networking services / search keyword / online relations / scale using Internet / online word / data mining / breadth-first search / follower network / human social networks / huge online social networking services / online social relations / search keywords / social and technological networks / spam web page farms / search engines / Web mining / Web search / Internet Measurement Conference / social network / scale-free networks / hinder relevant web page extraction / search results / /
MarketIndex
set 20 / Top 40 / /
Movie
Harry Potter and the Half-Blood Prince / Birds of a feather / /
NaturalFeature
Hudson river / /
OperatingSystem
Snow Leopard / /
Organization
Society for Industrial and Applied Mathematics / International World Wide Web Conference Committee / National Basketball Association / Haewoon Kwak / Changhyun Lee / Hosung Park / and Sue Moon Department of Computer Science / National Academy of Sciences / /
Person
Britney Spears / Pete Cashmore / Universe Pageant / Al Gore / lynn harris / Yong-Yeol Ahn / Michael Arrington / Prince / Michael Jackson / Stephen Fry / Stanford InfoLab / Sue Moon / Stanley Milgram / Ashton Kutcher / / /
Position
RT / author / King / tweet writer / messenger / Social and behavioral sciences General / Prince / /
Product
Pentax K-x Digital Camera / Apple iPhone 3GS Smartphone / Application Programming Interface (API) / PageRank / Microsoft Zune HD Portable Audio Device / /
ProgrammingLanguage
Java / /
ProvinceOrState
Delaware / North Carolina / /
PublishedMedium
the Huffington Post / the New York Times / Free Press / /
SportsEvent
NBA Finals / mlb / /
TVShow
the Ellen DeGeneres Show / /
Technology
API / Java / viral marketing / PageRank algorithm / data mining / /
What is Twitter, a Social Network or a News Media? Haewoon Kwak, Changhyun Lee, Hosung Park, and Sue Moon Department of Computer Science, KAIST 335 Gwahangno, Yuseong-gu, Daejeon, Korea {haewoon, chlee, hosung}@an.kaist