I've installed your plugin, and set it up to use "Post Thumbnail" which my theme supports. I've also got it using the "enclosure" method. When I view my RSS feed in feedburner I don't see any images associated with the items.
When using the MailChimp service to create a newsletter, it inserts the URL to the image and not the actual image itself. Any idea what's going on? How do I configure this correctly?