Or you could simply take the route that most monetized sites with RSS did, and only include the first few paragraphs of your content in the feed. Ars Technica

Or you could simply take the route that most monetized sites with RSS did, and only include the first few paragraphs of your content in the feed. Ars Technica still does this, and it strikes a good balance between letting the user see what content is available in the tool of their choice (and whether they'd be interested in reading more), and the site/publisher having control over how the complete articles are presented. Of course, this requires the site to actually have more than a paragraph worth of actual content for any given article.