PreviousNextInCategory
Adds two container tags that they give you the previous and next entries that are in the same category as the primary category of the current entry.
<MTEntryPreviousInCategory>
<a href="<$MTEntryPermalink$>">« <$MTEntryTitle$></a> |
</MTEntryPreviousInCategory>
<a href="<$MTEntryPermalink archive_type="Category"$>"><$MTEntryCategory$></a>
<MTEntryNextInCategory>
| <a href="<$MTEntryPermalink$>"><$MTEntryTitle$> »</a>
</MTEntryNextInCategory>

Mal
January 11, 2010 9:00 AM | Reply
It looks like this plugin no longer works for version 4.3 and up.
It was calling mt.cgi to hang up and keep threads open. I had to get in contact with my host (Dreamhost) to close the threads so I would not got 500 Internal errors.
Mal
replied to comment from Mal
January 11, 2010 9:16 AM | Reply
Man... that's a lot of typos in that comment.
Tarrega
August 30, 2010 1:01 PM | Reply
A great tool. Unfortunately ist doesn't work any longer. Is there another method for using the same functions?
Maarten Schenk
November 16, 2010 2:37 AM | Reply
You could try this plugin-free solution: http://www.movabletips.com/2010/11/displaying-the-next-and-previous-entry-in-a-category-with-movable-type.html