I have this counter posted on my blog:

While the number is correct, it is kinda a fake man made counter. Why? Because the new mail service, MailChimp, has a horrible counter. They don't let you change the size, and they don't include RSS readers.
Here is the official Mailchimp counter:

And here is the official RSS reader counter from Feedburner (which is supposed to consolidate blog readers via email but they can't import MailChimp's data):

Here is the math: +

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= (at least)

If you want the link to sign up for the RSS feed, click here for the RSS feed.