Users get
<link rel="alternate" type="application/atom+xml" title="Feed - 皮繩愉虐邦ψ官方討論區" href="http://forum.bdsmtw.com/feed.php" /><link rel="alternate" type="application/atom+xml" title="Feed - New Topics" href="http://forum.bdsmtw.com/feed.php?mode=topics" /><link rel="alternate" type="application/atom+xml" title="Feed - Active Topics" href="http://forum.bdsmtw.com/feed.php?mode=topics_active" />
even when logged it. The lack of sid=... in the links mean that they will only be able to view the limited versions of the feeds that non-logged in users see.