This plugin will enable you to include ads from the Pheedo RSS advertising network in your WordPress RSS feed. It also gives the ability to add HTML and Text signatures into the feed. Be sure to read the installation instructions for details on how to configure both the plugin and the Pheedo service.
The code for this plugin is heavily based on the Sig2Feed by Brendan Borlase at smackfoo.com
Please report any issues back to the Plugin Page. This plugin has been tested with WordPress 2.5.1.