It seems that the rss package is not outputting the correct rss.
If you look at
http://jongriffin.com/blog/?rss=10d you will see that not only does it not show new articles, my.yahoo.com and others don't see this as correct.
I get an invalid url.
It also doesn't give the correct title instead giving object id as the title.
This stuff is important for gaining google page rank etc.