Yahoo news has an interesting article on worm propigation via rss feeds.

"David Sancho, senior anti-virus research engineer at Trend Micro, warned that RSS feed hijacking will become commonplace when Microsoft Corp. ships Internet Explorer 7, a browser refresh that will feature built-in RSS support.

In a white paper titled "The Future of Bot Worms," Sancho said the IE7 release "will open some interesting possibilities to worm creators." - Yahoo!

A whitepaper by Trend-Micro describes the concept more in detail.

News Link: http://news.yahoo.com/s/zd/20051129/tc_zd/166349
Download The Paper: Trend Micro's "The Future of Bot Worms"