From SEO Diva
Did you know you can submit the RSS feed of your blog to RSS Directories? They'll ping your blog on a regular basis, and bring you lots of new traffic and subscribers. Below are 25 directories to get you started:
2RSS
4guysfromrolla
5z5
ASP Index
BlogBunch
Blogdigger
BlogPulse
DayTimenews
Feed24
Feedbase
FeedBomb
FeedBoy
Feedest
FeedMap
FeedNuts
FeedPlex
Feeds2read
Feeds4all
FeedSee
FeedsFarm
Findory
FindRSS
Free Feeds Directory
Golden RSS Feed
IceRocket
UPDATE: With all the questions on HOW to add your blogs, I thought an addendum would be appropriate here.
Get the feed URL for your blog. My AR blog feed is: http://activerain.com/blogs/dazzled/atom. Often on an outside blog, the URL will be simply http://myblogname.com/feed.
Using 2RSS, the first in the list, as an example, especially since it can be a little more complicated - click on the link that tells you how to convert an atom feed. Take that link and enter it, choose a category and a descsription of your blog, and enter. It's that simple. They will start pinging your blog and your new postings will be syndicated throughout the Internet. The more the merrier, so work your way down the list and add your blog to each of them.
If you want a RSS feed button, you can choose from a whole slew of beautiful colors to coordinate with your blog.
Thank you for the list.