Sure enough, it shows a drop of about 35 percent yesterday, as the screenshot above indicates.
A further look into the stats shows that, yesterday, there were no subscribers to the feed via Google Feedfetcher, the means by which RSS content is grabbed if you use Google Reader or a personalized Google home page.
Usually, Google Feedfetcher accounts for some 30 percent of my total RSS subscribers.
Is there something happening with Google that’s somehow blocking RSS subscriptions? This wouldn’t be the first time.
There are already questions in the Feedburner stats forum about yesterday’s big drop in RSS subscribers.
Hopefully someone will have some answers today.