I agree with mgillis to a certain extent, but I've found finding the major article sites offers a better alternative simply because of the syndication factor.
I've got articles in all sorts of places I've never submitted to.
I'm not home right now, but I've got a list there and I'll post it as soon as I'm back tomorrow.
Here are a couple of the better ones, though;
http://www.ideamarketers.com
http://www.ezine-articles.com
http://www.articlewarehouse.com (they loved my iKobo review).
bluweb: most article submission sites have an Author Bio blank specifically for your bio and backlink. Much like a newspaper, you can include info about yourself and your company at the bottom/end of the article. Don't bother putting it into the body.