Britta Johnson

TL;DR: All public tweets sent by a set of official government accounts during a 48-hour period of the Waldo Canyon wildfire are collected to answer the central question: How do message content, message style, and public attention to tweets relate to the behavioral activity of retransmitting a message in disaster?

TL;DR: The use of an agreed-upon hashtag and the number of users following an official account positively influence message retransmission, as does message content describing hazard impacts or emphasizing cohesion among users, which suggests some measures commonly taken to convey additional information to the public may come at a cost in terms of message amplification.

TL;DR: The authors investigate online information exchange behaviors of a set of state and federal organizations during the Deepwater Horizon 2010 oil spill disaster using data from the popular microblogging service, Twitter, and describes implications of conversational features, and suggests directions for future research.

TL;DR: Content analysis of official messages shows strong similarities with posting patterns previously observed in response to natural hazards, with the primary exception of themes related to the criminal investigation, suggesting a possible revision of guidelines for public information in light of the needs arising from extended counterterrorism operations undertaken in an urban environment.

TL;DR: Insight is provided into the use of networked communications during an event of heightened public concern, implications of conversational features are described, and directions for future research are suggested.