There are a couple of sites that I keep an eye on their Feedburner Feedcount, just to see how I’m comparing. It’s obviously not an accurate measure, but it only takes a second.
There are a couple of sites though that I’d love to know how many subs they have, where the number isn’t published. If they’ve ever published their feedcount in the past, then you can actually view their Feedcount by using a nice little trick.
Just get their feed url e.g http://feeds.feedburner.com/IWontShareMyFeedcount and then modify the url so that it reads http://feeds.feedburner.com/~fc/IWontShareMyFeedcount and their Feedcount will be displayed! Remember, it only works if they’ve displayed their Feedcount at some point in the past -even if only for 10 seconds.
Source: How To Geek
