BeyondPod allows you to organize feeds in categories. In most cases categories are based on a given topic (News, Science, Entertainment, Politics etc.) but they can be anything like "Favorites", "Podcasts", "Audio", "Video" etc. You are free to create as many categories as needed.
Each feed can be assigned to 2 categories (for example: "News" and "Favorites"). To assign a category for a feed, use the Feed Properties Dialog by tapping and holding on the feed in feeds view and selecting "Edit Feed".
The list of Feeds shows only the feeds for the "current category". To set the category to display (current category) tap on the desired category in the list of categories (immediately below the application toolbar). Selecting All Feeds category will show all feeds regardless of their category.
You can add, edit or delete categories from the "Manage Categories" dialog accessible from Menu > More... > Manage Categories.