Search Engine Journal, one of my favorite SEO and SEM sites, published a list of 75 press release and article submission sites.
Why should you be interested? Because when you write and post press releases and short articles on these sites, you include links back to your blog or website. These backlinks help the search engines decide which sites are more important, or more likely to have the information people are searching for. So if there are 100 links to your site, from different places on the web, but only 50 to a competitor’s site, then you will probably have a higher ranking. That means more exposure — and more visitors to your website.
It’s a little more complicated than that, but that’s the basic idea. However, be careful:
You want to be careful with submitting the same article to multiple submission sites because you could potentially receive duplicate content penalties. If you do decide to submit the same article to multiple sites, take the time to change the article title, along with a few sentences in each paragraph to make it unique enough for the search engines.
Make sure you use SEO best practices. Use keywords in the article title, use different variations of the keyword/phrase throughout the content, optimize the url (if possible), deep link to inner pages on your site (if possible).
You can read the whole article here: