Free articles websites are a great way to find free online articles for your site. And there are numerous free article directories to be found that you will find very useful in several different ways.
Not only can you submit articles to be shared and get free content for your site, some of these directories have some great features in addition to article directory submission.
You can find rankings for your articles, there are lots of edit functions -- even when your article is live, some have article writing blogs, ezine article forums, and give you the ability to receive emails on their site regarding your submissions.
There is also a function on some of these sites to sort the different categories and pieces you've submitted. One directory in particular gives you a ranking for each category in which you have published articles, and you can click on the category name to see more details like how many articles you have in a category, how many articles you need to advance your ranking, and how many articles the top author has.
Here are some links for some of the better ones: