It appears Google has disabled the FeedBurner API, its product to manage RSS feeds. Subscriber counts went down to zero for many users today and the API will shut down on Oct. 20. Google has not commented on whether the service is going away or if it’ll start charging for it. You can backup FeedBurner subscribers through the Publicize tab under Email Subscriptions and import them into another service. Google acquired FeedBurner for $100 million in 2007. [Source: Business 2 Community]