Enclosure Extractor: For $14.95, you too can have viruses delivered via RSS.
“Enclosure Extractor allows you to easily extract and download enclosures from newsfeeds. The bulk of feed readers do not support enclosures fully. Enclosure Extractor fills this gap by letting you enter a newsfeed (either a single RSS file or an OPML file) and scan it for enclosures.”
Via Dave Winer.