Cynthia at Google Groups must be a new FeedBurner user. After all, Feedburner has seen regular drops in subscriber count (maybe once or twice a month) and even ran into a zero subscriber count issue with some users earlier.
But Cynthia dropped 300 subscribers yesterday, according to her FeedBurner count (which makes her lucky, because I dropped 700+). What could have possibly been wrong?
From Google FeedBurner's team, Matt S. informed us that there were issues with FeedBurner and Google Feedfetcher. Naturally, when you get a drastic drop in subscribers, it's no reason to be alarmed; it happens way more often than it should.
Personally, I think asking my peers on Twitter is a great way to be kept abreast of the situation. :)
Forum discussion continues at Google Groups.