I think it might be a good idea to rename the Report Abuse action object to Call Moderator, Report Post or similar.
Beside the obvious, such as religious or racial abuse, for example, abuse can be a matter of perception and cultural background. Naming it Call Moderator Report Post I believe would sound more encouraging and inviting to report issues that are not explicitly mentioned in the list of available options, or are questionable and require to provide more info. People may also not be sure whether a post is de facto abuse, or are not sure about the consequences and may prefer to bring a post to a moderators attention for evaluation, rather than judging an issue as abuse.
Update: Title of idea changed