Crowdsourcing certain emergency information management (EIM) tasks to the general public has been proven to be effective during emergencies. To accelerate the diffusion of EIM crowdsourcing tools and quickly attract more participants, this work proposes a solution that takes full advantage of mobile social media platforms and their users. Specifically, a mobile crowdsourcing tool called CrowdEIM was designed and implemented based on the WeChat Official Accounts Platform. Formative studies were conducted to help design and evaluate a graphical mock-up, and summative evaluations were applied to investigate the effectiveness and usability of the runnable prototype. The findings indicate that EIM crowdsourcing tools based on mobile social media platforms are more likely to be disseminated and can provide more accurate and understandable emergency information, and that only those tools with simple operations can be widely accepted in emergency situations. Although limited to the WeChat platform, the CrowdEIM solution is expected to offer some valuable suggestions for the emergency management practitioners, and help explore more possibilities for the use of mobile social media during emergencies.

事实证明，在紧急情况下将某些紧急信息管理（EIM）任务众包给公众是有效的。为了加速EIM众包工具的传播并迅速吸引更多的参与者，这项工作提出了一种可以充分利用移动社交媒体平台及其用户的解决方案。具体来说，基于微信公众号平台设计并实现了一个名为CrowdEIM的移动众包工具。进行了形成性研究，以帮助设计和评估图形模型，并进行了总结性评估以研究可运行原型的有效性和可用性。调查结果表明，基于移动社交媒体平台的EIM众包工具更易于传播，并且可以提供更准确和可理解的紧急信息，并且只有那些操作简单的工具才能在紧急情况下被广泛接受。尽管仅限于微信平台，但CrowdEIM解决方案有望为应急管理从业人员提供一些有价值的建议，并有助于探索在紧急情况下使用移动社交媒体的更多可能性。