The entry in UrlRewriting.config breaks the tags rss feed if the blog is anywhere other than ~/blog
Is it really necessary to alter the url?
If so, is there a clever way to write the urlrewriting entry without hardcoding ^/blog ?
I've ended up changing the xslt in BlogRssFeedLink.xslt to refer directly to /rss.aspx?tag=mytag as I'm not too concerned about nice urls for rss feeds.