...or 6 times per second!!  According to a Skype blog post,

In less than two days, Skype for iPhone has been downloaded more than one million times – around six downloads every second.

This is a phenomenal performance, and we’re confident that it’s one of the fastest-downloaded iPhone apps ever. We’ll be back next week with an update, but for now, Skype on

Many feel that Skype's success on mobile devices doesn't bode well for mobile carriers or telcos in general.