Blogger Hits

Submitting your blog to blog directories is the primary basic step for gaining PR and traffic , yet traffic form blog directories is low.
Submission is essential for your blog to be known for search engines
You can see all available blog directories via Google by clicking here

The Blog directories that I found very useful are:
(If you want only 3 or 4 directories to submit your blog to, let them be some of those)

Blogarama PR 7

Blog Flux Directory PR 7 : One of google loved directories it gives your blog a page on it so it is wonderful SEO tool

Blog Catalog PR 7 : also provide a page for your blog with many links in your account and also RSS link

Blog toplist PR 7

Blog Search Engine PR 7

Submit your blog to all of them and you will get traffic and good PR , and traffic also increase your rank in these directories through the tracking code you get to put on your blog
Increased rank get you more traffic and so on ...
I think if you submit your blog to one of these your blog will be listed in search results
these directories