The most appropriate use for get_news_for_category is to create an array of news posts that belong to the category defined.
<?php if (function_exists('get_news_for_category')) $loop = get_news_for_category($category_id, $type, $days_ago, $posts_per_page); ?>
(integer) (optional) The ID of the category you’d like to fetch. If no ID is provided and the current page is a category, the current category ID of the current page will be used.
(string) (optional) (popular, recent) The type of search for news we’re doing. Either ‘popular’ or ‘recent’
(integer) (optional) The amount of days to search back through the news, if no quantity of days is provided, news can be retrieved as far back as possible.
(integer) (optional) The quantity of news posts to return.
Get popular news for the current category from the last 2 days and output the title of each article
if (function_exists('get_news_for_category')) $loop = get_news_for_category($category_id, $type, $days_ago, $posts_per_page); /* Start the Loop */ while ( $loop->have_posts() ) : $loop->the_post(); echo $post->post_title; endwhile; ?>
Additional values added by WP News Aggregator: http://wpnewsaggregator.com/documentation/#template_tags