标题： MurkySky：分析Bluesky上的新闻可靠性 显示英文标题

标题： MurkySky: Analyzing News Reliability on Bluesky

摘要： Bluesky最近已成为Twitter/X在公共讨论和新闻分享平台方面的活跃竞争对手。 到目前为止，关于Bluesky的研究大多数集中在由于迁移而导致的采用情况上。 对于将Bluesky作为新闻分享和讨论平台的特性研究较少，特别是其上不可靠信息的普遍性。 为了填补这一空白，这项研究提供了对Bluesky上新闻可靠性的首次全面分析。 我们介绍了MurkySky，这是一个公开工具，用于跟踪Bluesky上不可靠新闻来源内容的普遍性。 使用2024年夏季的firehose数据，我们发现Bluesky上来自可靠来源的新闻内容很普遍，且主要来自左翼倾向的来源。 虽然不可靠新闻来源的内容仅占所有新闻链接帖子的一小部分，但它们往往来自更具党派倾向的来源，但总体上反映了该平台的左翼倾向。 对新闻链接帖子中使用的语言和话题标签的分析显示，不可靠来源的内容集中在特定的讨论主题上。 显示英文摘要

摘要： Bluesky has recently emerged as a lively competitor to Twitter/X for a platform for public discourse and news sharing. Most of the research on Bluesky so far has focused on characterizing its adoption due to migration. There has been less interest on characterizing the properties of Bluesky as a platform for news sharing and discussion, and in particular the prevalence of unreliable information on it. To fill this gap, this research provides the first comprehensive analysis of news reliability on Bluesky. We introduce MurkySky, a public tool to track the prevalence of content from unreliable news sources on Bluesky. Using firehose data from the summer of 2024, we find that on Bluesky reliable-source news content is prevalent, and largely originating from left-leaning sources. Content from unreliable news sources, while accounting for a small fraction of all news-linking posts, tends to originate from more partisan sources, but largely reflects the left-leaning skew of the platform. Analysis of the language and hashtags used in news-linking posts shows that unreliable-source content concentrates on specific topics of discussion.