RSS is a specialized subset of XML. Good description here:
http://cyber.law.harvard.edu/rss/rss.htmlSince it is XML, you can access the information in the RSS feed with SimpleXML; example in the code snippet. If you have several RSS feeds, you would just read them one at a time and extract the elements of the object you want to keep. Then produce the <div> statements. Easy!
best regards, ~Ray