Article submission sites are one way to get your blog noticed and to build back links. Article Submit is a site where you can submit an article with two relevant links in the article and two in the resource box.
This is mainly a linkbuilding process so you should use sites that give you do-follow links, the large sites do not give you do-follow links, but you could get traffic from them. So keep that in mind, you have two purposes traffic and linkjuice. The large sites will also check to make sure that your article is unique where as the smaller sites will take articles that have already been distributed.
My plan is to write 3-4 articles at once, one for Ezine and one for article base because both of those sites articles end up syndicated somewhere else and I can get traffic from them. Then one to the smaller article submission sites. Once Ezine and article base accept the submission then I distribute it to the smaller sites. I recycle the articles as much as possible.