Trying Feedburner
Tonight, I decided to switch to Feedburner to manage the feeds from my site. I did this for two reasons: 1) I would like better traffic information on the readership for my feeds and 2) I like some of the configuration options they have.
Both Feedburner and Typepad swear that they have everything set up so that all my existing feed subscribers will now get the feeds via Feedburner without changing their subscriptions (some sort of redirect, I guess). We'll see. Please comment if you are having problems.
If you are getting some duplication of posts or some read posts showing up as unread, I am pretty sure that this is a one-time effect of the changeover. However, if the problem persists, let me know.