I just installed your plugin and I have a problem similar to http://wordpress.org/support/topic/triggers-404, hence I don't see the 'add RSS' stuff. The plugin throws JS 404s for URLs like
while the 'good' URL is
so there's an extra /usr/share/wordpress... part in the URL. We're using WP 3.3.2 on Debian squeeze and quite a lot of apache magic on http://nic.phys.ethz.ch/, but other plugins using JS work fine.