The "View Unread Posts" link that appears in the action bar automatically redirects to a longer link with a unique sid value when you follow it. It's still possible to right click on the link and copy it before following, but it would handy to have some kind of permalink option that does this automatically.
Note: while I feel that this would be handy, it's not in any way something I would call important.
Note: while I feel that this would be handy, it's not in any way something I would call important.