M site.go → site.go

@@ -131,6 +131,9 @@ http.Redirect(w, r, "/", http.StatusSeeOther)
 	}
 }
 
+// username fetches a client's username based
+// on the sessionToken that user has set. username
+// will return "" if there is no sessionToken.
 func (s *Site) username(r *http.Request) string {
 	sessionToken, err := r.Cookie("session_token")
 	if err != nil {