Google Reader have just started showing how many readers are subscribing to an RSS feed in a similar way to the way that Bloglines have been showing subscriber numbers for years now.
The subscriber numbers can be seen simply by doing a search for a blog’s name after clicking the ‘Add Subscription’ link once you’ve logged into your Google Reader account.
Keep in mind that the numbers are not total subscriber numbers – just those subscribing via Google Reader (some are saying it could include other Google RSS subscribing services like iGoogle).
via Daily Blog Tips.