This document summarizes a PhD case study on arguments about deleting Wikipedia articles. The study had the following key findings:
1) Article creators often misunderstand deletion policies and express strong emotions when their articles are deleted. This can demotivate newcomers from continuing to contribute.
2) Novices make arguments for keeping articles that are more problematic than experts' arguments, such as appeals to personal preference rather than notability.
3) Discussions without a clear consensus are more time-consuming, difficult to judge, and likely to cause emotional upset if the decision is later overturned.
4) Identifying clear criteria for article deletion, such as notability, sources, bias, and maintenance, could help