This plugin places an icon in the media row that allows a user to enter an RSS feed url, choose the number of items to display, and choose to display content, author or date for each item. It works via the use of a shortcode in the following format:
[cetsEmbedRSS id=’http://en.blog.wordpress.com/feed/’ itemcount=’2′ itemauthor=’1′ itemdate=’1′ itemcontent=’1′]