You can hack your inbox sections similarly in a number of different ways (e.g., only show emails labeled "work" that are unread). Here are the steps using this example, for Chrome:

1. Set up the priority inboxes and your labels, if they aren’t already.
2. Apply a filter to archive “work” messages coming in so they skip the main inbox.
3. Go to Settings > Inbox > Options next to the inbox section you want to customize.
4. Click “More Options…”
5. Right-click or CTRL+Shift+C on the label (e.g., “work”) and select “Inspect element.” (Firefox users just go to Tools > Web Developer > Inspect Element and click on the label).
6. Look for the attribute cfg=”^all,Work” and change the value to cfg=”^u,^all,Work”
7. Finally, select the work label on the page as normal.

Commands:

^i = Inbox
^u = Unread
^io_im = Important
^t = starred
^f = sent
^r = drafts
^all = All mail (include archive)
ie. ^i,^u,Work = all emails in your inbox, that are unread with the label “Work”.

via Customize Gmail's Priority Inbox View with a Super Simple Hack.

Nice hack for Gmail’s priority inbox.