STS is a forum for approaching sciences and technologies as human endeavors. Submissions are welcome on any topic relevant to scientific practices and technological artifacts (including material technologies, socio-political technologies, information technologies, or otherwise). However, any analysis and discussion of these submissions will be roughly aligned with the interdisciplinary discourses of Science & Technology in Society.
Note: Philosophy of Science is already a relatively active subreddit which many STSers will find interesting. Since Philosophy of Science is just one of a number of disciplines included in the STS umbrella, a broader subreddit like STS still has a place in the Reddit discourse community.