Feedburner is hot.
They continually innovate in the feed space, and they’re doing it with tools that are both useful AND easy to use. It’s so simple to say you want to make easy to use tools that are useful, but it’s hard to execute.
The latest addition to their suite FeedFlare. FeedFlare creates a simple footer block at the bottom of each item in your feed that contains various items. The current available items are del.icio.us tags, posting the item to del.icio.us, technorati links, number of comments, email to friend, email to author, and creative common licensing. More link types will be made available, and they’re also intelligently going to allow developers to create their own items to add to this footer.
They also plan in the near future to allow publishers to place the footer in their blog or content itself instead of it only appearing in the RSS feed. That will be a nice touch for consistency.
Not only is this useful for just the services they currently offer in the footer, but it has bigger implications for future tracking and advertising in feeds as Fred Wilson notes in his blog.