In a Stack Exchange comment, I was corrected by referring to a user named alice as a "he". I said (context): I know he thinks he needs all of the eigenvalues, but I've learned that ... and was ...
In IRC chats you can "perform an action" with the /me command. It changes the way the text looks so that it's a little more third person and narrative. Here's an example: chmullig: I'm really hungry ...