I just found this site that list 40 locations to submit your RSS to boast traffic for your blog. http://www.rss-specifications.com/rss-submission.htm hope that you find this helpful.
It's a great link, but it still requires manual submission one by one. I prefer the auto submission software i'm using now, you can even see the proof of the submitted page ranking in google. It's fully automatic and autopiloted, you can even search which blog area and how many of them you want to submit to with a one time low cost fee, if you are interested, just PM me and i'll show you the link