Anonymity forms an integral and important part of our digital life. It
enables us to express our true selves without the fear of judgment. In this
paper, we investigate the different aspects of anonymity in the social Q&A site
Quora. The choice of Quora is motivated by the fact that this is one of the
rare social Q&A sites that allow users to explicitly post anonymous questions
and such activity in this forum has become normative rather than a taboo.
Through an analysis of 5.1 million questions, we observe that at a global scale
almost no difference manifests between the linguistic structure of the
anonymous and the non-anonymous questions. We find that topical mixing at the
global scale to be the primary reason for the absence. However, the differences
start to feature once we "deep dive" and (topically) cluster the questions and
compare the clusters that have high volumes of anonymous questions with those
that have low volumes of anonymous questions. In particular, we observe that
the choice to post the question as anonymous is dependent on the user's
perception of anonymity and they often choose to speak about depression,
anxiety, social ties and personal issues under the guise of anonymity. We
further perform personality trait analysis and observe that the anonymous group
of users has positive correlation with extraversion, agreeableness, and
negative correlation with openness. Subsequently, to gain further insights, we
build an anonymity grid to identify the differences in the perception on
anonymity of the user posting the question and the community of users answering
it. We also look into the first response time of the questions and observe that
it is lowest for topics which talk about personal and sensitive issues, which
hints toward a higher degree of community support and user engagement.

通过 5.1 万个问题的分析，揭示了社交问答平台 Quora 上匿名和非匿名问题的差异：匿名问题的提问者更倾向于谈论抑郁、焦虑以及个人的问题，且匿名群体与外向性、宜人性呈现正相关，与开放性质呈现负相关；此外，对于个人与敏感问题的回答，社区支持和用户参与度更高。