This is good stuff, here are a few more links I found for submitting your blog:
http://www.bloguniverse.com/radlinks/
http://www.daypop.com/info/submit.htm
Here's a puzzling question of mine... Why submit RSS feeds of the content on your site? Part of the equation is to promote the brand of your site. With an RSS feed someone is simply syndicating your content on their site and if you don't have links in the content that link back to one of your sites, how does that benefit you?
Another factor is I've heard google doesn't like duplication of content...