anchor.diff:        (if (eql tab :about)
           (htm (:li :class "selected" "About Kindista"))
           (htm (:li (:a :href "/about" "About Kindista"))))   
  -      (if (eql tab :feedback)
  -        (htm (:li :class "selected" "Feedback"))
  -        (htm (:li (:a :href "/feedback" "Feedback"))))
  +      (when *user*
  +        (if (eql tab :feedback)
  +          (htm (:li :class "selected" "Feedback"))
  +          (htm (:li (:a :href "/feedback" "Feedback")))))
         (if (eql tab :faq)
           (htm (:li :class "selected" "Frequent Questions"))
           (htm (:li (:a :href "/faq" "Frequent Questions")))))))
  
positive.code:              (str (invite-sidebar)))))
  
  (defun get-feedbacks ()
    (require-user
      (standard-page
        "Feedback"
        (html
  
negative.code:       :selected "help"
        :right (html
                 (str (donate-sidebar))
                 (str (invite-sidebar))))
      (see-other "/faq")))
  
  (defun post-feedbacks ()
    (require-user
  