However, FeedFlare is a great addition to any FeedBurner feed as it builds interaction and social media links into each post

FeedBurner is the only service (that I know of) that will re-publish a blogs feed in order to get feed stats. Being such a great service, many users use it only to figure out how many readers their blogs have.
However, FeedFlare is a great addition to any FeedBurner feed as it builds interaction and social media links into each post.

FeedFlare allows publishers to easily build “interactivity” into the content they create, making it simple for subscribers to tag, email or share their content with others. Publishers can include a variety of services including a live display of the number of comments to each post, the ability to email the author directly and show the number of blogs that link to their item.

To enable FeedFlare, login to your FeedBurner account, go to the Optimize tab then choose FeedFlare from the left column. You can then check items that you want to display in your feed.
I suggest adding at least the following:

• Email This – Send the post via email to a friend or a co-worker.
• Comments Count – You may be able to increase click thoughs if people know there are comments on your post.
• Save to del.icio.us – Del.icio.us is one of the biggest social bookmarking sites, lets make it easy for readers to save your posts there.
• Digg This – Ahh Digg. Everyone is obsessed with getting in Digg. This nice part about this button is it also shows you the number of Diggs and if there are any Digg comments.
• Stumble It – StumbleUpon is quickly becoming a great way to find new sites. If a users bookmarks your post in StumbleUpon, you’ll have a better chance of getting additional StumbleUpon traffic.

There are many other FeedFlare choices too. The trick here is to pick the 5 or 6 that will best work for your blog. Don’t go overboard and put as many as you can as it might deter people from reading the feed. Also, don’t just put the Digg button on because everyone else does. If you don’t feel a FeedFlare will work well for your blog, don’t add it.
By adding FeedFalre to your FeedBurner feed, you are making it easier for users to interact with your posts. Visitors don’t always make it to your site to read comments or hit one of the social bookmark buttons. Brining the options to the readers will increase the chances of them sharing one of your posts and getting you additional exposure.