Missing some subscribers? Have a Feedburner Feed? Your MyYahoo readers aren't reporting accurately. They're reading your blog from behind trees, or in dark alleys, or something. Maybe from a long way away through telescopes & high-powered binoculars?
(forgive me... 'tis the caffeine....)
See the RSS blog & the feedburner forums for a slightly more cogent & less conspiratorial / caffeinated take on what's going on.
Filed In: feedburner, myyahoo, feeds, readers