I’ve just released a new Wordpress plugin: FeedBurnerCount. It gets the job of retrieving feed readers from the FeedBurner API done efficiently.
Lately it seems the API is up and down all the time, many times providing invalid data, and recently moved to a new URI. The one plugin that solves this same task hasn’t been updated in months, and it’s not ready for an inconsistent API, which results in a N/A count all the time.
FeedBurnerCount can maintain your feed count even if the Awareness API is not working (or you can specify a custom message for those situations), and calculate the average readers count in a period of time. It also sniffs your feedburner details (if the FeedBurner plugin installed) for an impossibly easier setup.
Head to the the plugin page for more details.