For a website with a content management system

Since you already have the capability of adding content, you need a way to get that content into a feed. Some content management systems come with feed-generating technology built in. If you don't have that, there are many choices for making a feed.

If you have a very complex website, with firewall's and a security system, adding a feed may take some technical know-how.

Pay attention to how the provider makes the feed, where it will be situated on your site, will be automatically updated each time you add an item, will it be registered with feed search engines and directories, how the feed will display in the various readers and whether or not you have unlimited click throughs to the content