About a month ago, OJR ran a feature on RSS in the news industry. The central concern seemed to be that if people used RSS to read the newspaper headlines, they wouldn't visit the news site home page, where all the ads are.
I don't know why, but this engendered the following stupid media trick. Differentiate your dang RSS feeds!! Think of RSS subscribers as a completely different, self-identifying audience for your content. Point towards different stuff. Add items with special offers, a.k.a. targeted coupons. Grab interesting stuff out of the archives and make it free for a time. Turn your feeds into a premium service for those who want more than the front page.
Just a suggestion.