CapaJC - Yes, very true. It just happens our username fields are stored in the format first.lastname. I can definitely see the point if the user's record is deleted.

b-rad - Exactly what I'd like to do! Ideally, I'd like to modify the code that is setting the parameters for the comment in the first place (and add in the user_id as well as what is on there currently), rather than creating a business rule which finds the last comment when an incident.comments.changes() and set the user_id there. Is this possible to do?