Sure; every one - As a site owner - hope to increase visitors to his site. Here an amazing list of many good Blog directories to submit your blog/site to attract more visitors to your blog.
Here you a list of a good blog directories to join with them and they are completely free.
Technorati : http://technorati.com
Fuel My Blog : http://www.fuelmyblog.com
Blogtoplist : http://www.blogtoplist.com
Mybloggingarea : http://www.mybloggingarea.com
Topblogarea : http://www.topblogarea.com
Topblogging : http://www.topblogging.com
Blogroll : http://blogroll.net
Worldtopblogs : http://www.worldtopblogs.com
Topbloglists : http://www.topbloglists.com
Blogvillage : http://blogvillage.gotop100.com
Blogelites : http://www.blogelites.com
Myblogdirectory : http://www.myblogdirectory.net
Blogcatalog : http://www.blogcatalog.com
Blogarama : http://www.blogarama.com
Blogion : http://www.blogion.com
Bloggeries : http://www.bloggeries.com
Bloghop : http://www.bloghop.com
Bloggingfusion : http://www.bloggingfusion.com
Blog-search : http://www.blog-search.com
Blogpoint : http://www.blogpoint.com
Blogs-collection : http://www.blogs-collection.com
Globeofblogs : http://www.globeofblogs.com
Blogoriffic : http://www.blogoriffic.com
Blogflux : http://dir.blogflux.com
Blogsearch : http://www.blog-search.com
Bloghub : http://www.bloghub.com
Bloggernity : http://www.bloggernity.com
Bloggernow : http://www.bloggernow.com
Weblog-index : http://www.weblog-index.com
5starblogs : http://www.5starblogs.com
Getblogs : http://www.getblogs.com
Blogtree : http://www.blogtree.com
eBlogzilla : http://www.eblogzilla.com
Search4Blogs : http://www.search4blogs.com
BloggerTalk : http://www.bloggertalk.net
LSblogs : http://www.lsblogs.com
Bloggapedia : http://www.bloggapedia.com
Blogshowoff : http://www.blogshowoff.com
SGBlog : http://www.sgblog.com
Myblog2u : http://www.myblog2u.com
Icerocket : http://tracker.icerocket.com
Goblogz : http://www.goblogz.com
Aveblogs : http://www.aveblogs.com
Bloggers : http://www.bloggers.com