Robert Scoble’s measure is the “Folks with more than 100 apps” and I have 116. At a guess I reckon maybe 20% of those get frequent use with Tweetdeck, Typepad, LinkedIn and Facebook being the most used. I think TomTom is my most used non-web application. Strange thing is the least used mode for my iPhone is as a phone!
@Scobleizer Robert Scoble
So far I've found 35 superusers and started a Twitter list: http://twitter.com/Scobleizer/super-mobile-users (Folks with more than 100 apps)