Michael Adams (mdawaffe)

Just One Category will cause WordPress to display on a category archive page 
only those posts which are direct members of that category, i.e. this plugin 
will exclude from that category page all posts which belong to any of that 
category’s subcategories but do not belong to the category itself.

Just One Category

On a category's archive page, displays only the posts directly in that category, not in any sub-categories.

Renji

‘Only Pages in Feed’ is a little plugin that modifies WordPress RSS feed to exclude all ‘Post’ types and show only ‘Pages’ in it. So if you are using WordPress as a CMS and want only Pages to appear in your site feed, this plugin is for you.
The plugin needs no configuration. Just activate it, and you are good to go. Deactivating the plugin restores RSS feeds to their default state.
<h4>Plugin Page</h4>
SumTips (<a href="http://sumtips.com/2011/12/include-page-custom-post-type-wordpress-feed.html" rel="nofollow ugc">http://sumtips.com/wp-page-in-feed</a>)

Only Pages in Feed

Remove all blog posts from site's RSS feeds, leaving only Pages.

Just One Category vs Only Pages in Feed