I only use the Google Reader web interface to check my trends once every so often.
Here is my list of feed obscurity (subscriber numbers).
Woo! Nobody is subscribed to my own Tumblr except me. I don’t mind since I am writing for myself rather than others.
Ars Technica Infinite Loop has only one subscriber as it is a personal URL for my full text feed. (I pay money.)
This is interesting: Marco Arment and Lukas Mathis (ignore the code) have the same number of subscribers to within 0.04%. I don’t know what to make of that other than it is a strange coincidence.
As always Daring Fireball has crazy numbers of subscribers. This is just Google Reader subscribers; this does not include direct feed access, the Twitter feed and the normal website.