I'm not convinced yet.
"In my mind, there's no question that a blogger grants an implied license to the content in an RSS feed. However, because it's implied, I'm just not sure of the license terms. So, in theory, it could be an implied license to permit aggregators to do whatever they want."
http://blog.ericgoldman.org/archives...ntent_ag_1.htm
His biography indicates he has at least some clue about what he's saying.
http://www.ericgoldman.org/biography.html