The dynamics of mass interaction
CSCW '98 Proceedings of the 1998 ACM conference on Computer supported cooperative work
The quality of online social relationships
Communications of the ACM - How the virtual inspires the real
Slash(dot) and burn: distributed moderation in a large online conversation space
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Studying cooperation and conflict between authors with history flow visualizations
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Using social psychology to motivate contributions to online communities
CSCW '04 Proceedings of the 2004 ACM conference on Computer supported cooperative work
How oversight improves member-maintained communities
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Socialization in an Open Source Software Community: A Socio-Technical Analysis
Computer Supported Cooperative Work
Lurking: An Underestimated Human-Computer Phenomenon
IEEE MultiMedia
Becoming Wikipedian: transformation of participation in a collaborative online encyclopedia
GROUP '05 Proceedings of the 2005 international ACM SIGGROUP conference on Supporting group work
You Are Who You Talk To: Detecting Roles in Usenet Newsgroups
HICSS '06 Proceedings of the 39th Annual Hawaii International Conference on System Sciences - Volume 03
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Structure and evolution of online social networks
Proceedings of the 12th ACM SIGKDD international conference on Knowledge discovery and data mining
SuggestBot: using intelligent task routing to help people find work in wikipedia
Proceedings of the 12th international conference on Intelligent user interfaces
Talk amongst yourselves: inviting users to participate in online conversations
Proceedings of the 12th international conference on Intelligent user interfaces
He says, she says: conflict and coordination in Wikipedia
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
A content-driven reputation system for the wikipedia
Proceedings of the 16th international conference on World Wide Web
Talk Before You Type: Coordination in Wikipedia
HICSS '07 Proceedings of the 40th Annual Hawaii International Conference on System Sciences
Quantitative analysis of thewikipedia community of users
Proceedings of the 2007 international symposium on Wikis
Cooperation and quality in wikipedia
Proceedings of the 2007 international symposium on Wikis
Creating, destroying, and restoring value in wikipedia
Proceedings of the 2007 international ACM conference on Supporting group work
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Taking up the mop: identifying future wikipedia administrators
CHI '08 Extended Abstracts on Human Factors in Computing Systems
Harnessing the wisdom of crowds in wikipedia: quality through coordination
Proceedings of the 2008 ACM conference on Computer supported cooperative work
Articulations of wikiwork: uncovering valued work in wikipedia through barnstars
Proceedings of the 2008 ACM conference on Computer supported cooperative work
It's all 'about you': diversity in online profiles
Proceedings of the 2008 ACM conference on Computer supported cooperative work
Us vs. Them: Understanding Social Dynamics in Wikipedia with Revert Graph Visualizations
VAST '07 Proceedings of the 2007 IEEE Symposium on Visual Analytics Science and Technology
"edit this page": the socio-technological infrastructure of a wikipedia article
Proceedings of the 27th ACM international conference on Design of communication
The effects of diversity on group productivity and member withdrawal in online volunteer groups
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Lurking? cyclopaths?: a quantitative lifecycle analysis of user behavior in a geowiki
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
User lifecycles in cyclopath: a survey of users
Proceedings of the 2011 iConference
My kind of people?: perceptions about wikipedia contributors and their motivations
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Early detection of potential experts in question answering communities
UMAP'11 Proceedings of the 19th international conference on User modeling, adaption, and personalization
Proceedings of the 7th International Symposium on Wikis and Open Collaboration
Proceedings of the 7th International Symposium on Wikis and Open Collaboration
Participation in Wikipedia's article deletion processes
Proceedings of the 7th International Symposium on Wikis and Open Collaboration
Redundancy and collaboration in wikibooks
INTERACT'11 Proceedings of the 13th IFIP TC 13 international conference on Human-computer interaction - Volume Part I
Fresh faces in the crowd: turnover, identity, and commitment in online groups
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Technology-mediated contributions: editing behaviors among new wikipedians
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Classroom Wikipedia participation effects on future intentions to contribute
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Proceedings of the ACM 2012 conference on Computer Supported Cooperative Work
Computer Supported Cooperative Work
Personalized incremental users' engagement: driving contributions one step forward
Proceedings of the 17th ACM international conference on Supporting group work
Contributing to Wikipedia: Through Content or Social Interaction?
International Journal of Distributed Systems and Technologies
Tea and sympathy: crafting positive new user experiences on wikipedia
Proceedings of the 2013 conference on Computer supported cooperative work
Using edit sessions to measure participation in wikipedia
Proceedings of the 2013 conference on Computer supported cooperative work
Contributor profiles, their dynamics, and their importance in five q&a sites
Proceedings of the 2013 conference on Computer supported cooperative work
How long do Wikipedia editors keep active?
Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration
On the accuracy of urban crowd-sourcing for maintaining large-scale geospatial databases
Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration
Deletion discussions in Wikipedia: decision factors and outcomes
Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration
Mutual evaluation of editors and texts for assessing quality of Wikipedia articles
Proceedings of the Eighth Annual International Symposium on Wikis and Open Collaboration
Work-to-rule: the emergence of algorithmic governance in Wikipedia
Proceedings of the 6th International Conference on Communities and Technologies
Temporal analysis of activity patterns of editors in collaborative mapping project of OpenStreetMap
Proceedings of the 9th International Symposium on Open Collaboration
The identification of deviance and its impact on retention in a multiplayer game
Proceedings of the 17th ACM conference on Computer supported cooperative work & social computing
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Open content web sites depend on users to produce information of value. Wikipedia is the largest and most well-known such site. Previous work has shown that a small fraction of editors --Wikipedians -- do most of the work and produce most of the value. Other work has offered conjectures about how Wikipedians differ from other editors and how Wikipedians change over time. We quantify and test these conjectures. Our key findings include: Wikipedians' edits last longer; Wikipedians invoke community norms more often to justify their edits; on many dimensions of activity, Wikipedians start intensely, tail off a little, then maintain a relatively high level of activity over the course of their career. Finally, we show that the amount of work done by Wikipedians and non-Wikipedians differs significantly from their very first day. Our results suggest a design opportunity: customizing the initial user experience to improve retention and channel new users' intense energy.