Benefits of submitting to blog directories?

[mountaineer]

I got some domain names created about 6 blogs, and a few WP tube sites mid last month. Some how all the search engines found me and traffic is starting to come in with out my trading links or submitting to anything.

Now what would the benefits of me submitting my blogs to blog directories?

[ecchi]

More traffic and improving your link popularity with the search engines.

[mountaineer]

I think I will give it a few months and see how big I can build my network just linking to my own sites and if I dont like my progress I will start trading links and submitting to directories.