I had an interesting question today about how one measures the subscriber base of a blog. RSS is key, which I posted a bit about several weeks ago. Once it's enabled within a blog, a few indicators can help you get your arms around the numbers.

I happen to use Bloglines, which gives me the number of Bloglines users that happen to be subscribers to our blog. We also have an account over at Feedburner which gives us circulation figures on how many users (Bloglines, Yahoo, Google, etc.) are requesting our RSS feed on a regular basis. This number is an interesting one to watch grow as we post more and more.

By the way, if you're interested in subscribing to our blog, our link can be found here.