iSixSigma
http://www.isixsigma.com/syndicate/
Add business improvement related articles from iSixSigma to your site. No registratiuon is required and the feed is customizable. Information is updated automatically on every page load. 

Article Geek
http://www.articlegeek.com/
A ton of free articles on a multitude of categories from the arts, self-improvement, and more. To use the articles all you have to do is agree to their terms of service. You cannot edit the articles or hyperlinks and you must include the Author Bio section along with the source section that credits ArticleGeek.com. All articles are in either text or HTML. Just copy and paste the code provided for each article onto your webpage and you're done.

WorkTree
http://www.worktree.com/career-articles.cfm
Large selection of career and job-related articles. According to their reprint guidelines, permission is granted to reproduce any of the articles but the article content CANNOT be altered and credit must be given to the author and also an active link to http://www.WorkTree.com.

Children Webmag
http://www.childrenwebmag.com/content/view/140/273/
The internet's child care magazine published by a consortium led by The Centre for Children and Youth, University of Northampton,UK. Their preferred method is to use the RSS feed they offer, but you can also use an extract of the article and include a direct link through to the original and complete article. Complete details can be found by following the link above.

Content Infusion
http://www.contentinfusion.com/default.aspx
Highly recommended. Content Infusion offers quality syndicated articles for your website. As a registered member, you gain access to copyright-free articles and images that can be customized and directly loaded onto your Web site(s). New content is posted automatically, providing your visitors with a fresh Web experience. You can choose entire categories of content rather than individual articles.

Inch-Aweigh
http://inch-aweigh.com/article_feed.htm
Fitness, nutrition and weight loss are the topics here. They offer a new auto-updating article every week. You must send them an email to get the code.

TamingTheBeast
http://www.tamingthebeast.net/misc/contentfeed.htm
Nice collection of articles based on web design, internet marketing and e-commerce. Their articles and tutorial feed contain no advertising apart from related resources/articles links and short bio at the end of each publication. Articles will fit in perfectly with the look of your site! The link in the bio opens in a new window - so you won't lose visitors from your site. The script loads the article quickly so your pages won't be bogged down.

Web Source - The Syndicator
http://www.web-source.net/syndicator.htm
The Syndicator is a unique service that provides you with free web site content and enables webmasters to publish complete articles and/or just headlines on their web site. These articles were written by some of the top online professionals and are automatically updated each week.

SpiritualiTea
http://www.spiritualitea.com/spiritualitoys/
SpiritualiTea offers articles by Sandra Mizumoto Posey, Ph.D. on a variety of spiritual topics. You are free to copy the articles onto your own site, print magazine, class hand-out, or newsletter as long as no changes, additions or deletions are made to the text. All the information in the box below each article must be included on the document whenever it is distributed or reproduced.

Web Marketing Today
http://www.wilsonweb.com/syndicate/
As the title suggests, this website offers internet resource articles that can be reproduced and hosted on your site or as free syndicated content. The syndicated content uses javascript code. Reproduced articles must abide by certain restrictions and requirements.