  In contrast to many decades of research on oral code-switching, the study of
written multilingual productions has only recently enjoyed a surge of interest.
Many open questions remain regarding the sociolinguistic underpinnings of
written code-switching, and progress has been limited by a lack of suitable
resources. We introduce a novel, large, and diverse dataset of written
code-switched productions, curated from topical threads of multiple bilingual
communities on the Reddit discussion platform, and explore questions that were
mainly addressed in the context of spoken language thus far. We investigate
whether findings in oral code-switching concerning content and style, as well
as speaker proficiency, are carried over into written code-switching in
discussion forums. The released dataset can further facilitate a range of
research and practical activities.
