I’m a Feedburner fan and run this blog’s RSS through the service so I can gain some sense of traffic trends. Per Peter Kim’s M20 measurement criteria, I made my RSS subs visible with this badge that tallies my feed subscribers.
Every weekend about ten percent of my subscribers seem to unsubscribe or vanish. By Tuesday, they return.
So what happened to the 43 mystery subs? And why do they go away every Saturday?