Here i have given free-to-submit directories which help to build free traffic to your blog.

Technorati http://www.technorati.com/ping.html
DAYPOP http://www.daypop.com/info/submit.htm
Feedster http://www.feedster.com/add.php
Bloglines http://www.bloglines.com/register/
Blogdex http://blogdex.net/add.asp
TOPIX.NET http://www.topix.net/topix/faq?feedback=...
popdex http://www.popdex.com/addsite.php
Blogcritics.org http://blogcritics.org/archives/2003/10/...
Blogstreet http://www.blogstreet.com/bin/addrss.cgi
blogwise http://www.blogwise.com/submit
boingboing http://boingboing.net/suggest.html
2rss http://www.2rss.com/
WeBlogALot http://www.weblogalot.com/Ping/
Globe of Blogs http://www.globeofblogs.com/register.php
Blog Universe http://bloguniverse.com/
The Truth Laid Bear http://www.truthlaidbear.com/addtoscan.p...
Memigo http://www.memigo.com/users/join
BlogHop http://www.bloghop.com/account/index.htm
Blogarama http://www.blogarama.com/index.php?show=...
Contents Matter http://www.bloghq.com/create.php