Here is a nice tip : mix your site feeds, article feeds, web2.0 feeds, profile feeds to one giant rss feed and submit it to top 20 rss feeds directories. don't limit yourself only to your website rss feed, link juice for the locations that gives you a link is also good and cost you nothing extra, still free list of rss directories is here http://www.imguru.biz/search-engine-marketing/link-building/37-build-back-links-with-rss-feeds.html and btw, if anyone knows a good rss feed submitter , please share your opinion.
RSSBot is pretty good. It's not free but a few times per year the guy who built the software, Big Mike, runs a selection of coupon codes that knock the price down to $7 - well worth it my humble opinion.
Thanks for Sharing.. I was looking for a great place to submit my RSS feeds and your post from yesterday came up first in Google! Thanks... Cheers