Update (2012/10/25): the Authenticate Lite plugin is rebuilt and relaunched as Simple Custom Content! The following information about Authenticate Lite remains here for reference purposes only. Authenticate Lite is a follow-up version of the original Authenticate custom-content plugin for WordPress. Just as with the full version of Authenticate, Authenticate Lite enables universal and/or targeted inclusion of custom content for both feeds and posts. Ideal for adding copyright information, distribution policy, thank-you messages, custom links, special offers, etc. [...] • Read more »