Spending hours optimizing your site for search engine traffic is pretty pointless if they don’t know you exist! I have compiled a quick and dirty list of 30 directories that you can submit your blog or ping RSS feed to for free.
Blog and RSS Directories
http://directory.google.com/Top/Computers/Internet/On_the_Web/Weblogs/
http://www.moreover.com/cgi-local/site/sourcesubmission.pl
http://www.technorati.com/ping
http://www.blogwise.com/submit
http://www.weblogalot.com/Ping/
http://www.globeofblogs.com/register.php
http://www.technorati.com/ping.html
http://www.technorati.com/help/blogfinder.html
http://www.bloguniverse.com/
http://www.boingboing.net/suggest.html
http://www.bloghop.com
http://www.blogdigger.com/add.jsp
http://home.lycos.com/addasite.html
http://www.bloogz.com/man_en/add_your_url.php
http://www.sarthak.net/blogz/add.php
http://reader.rocketinfo.com/desktop/AddRSSFeed.jsp
http://publisher.yahoo.com/rss_guide/submit.php
http://www.blogsoldiers.com/
http://www.feedbomb.com/
http://www.findory.com/submit-blog/
http://www.pingomatic.com/
http://www.getblogs.com/
http://www.feed24.com/
http://www.blogpulse.com/submit.html
http://www.feed-directory.com/addfeed
http://www.fybersearch.com/add-url.php
http://www.getblogs.com/
http://www.rssmad.com/
http://dmoz.org/add.html
http://www.submitexpress.com/submit.html
