Hey, Jon. This was actually just answered recently: http://groups.google.com/group/twitter-development-talk/browse_thread/thread/979d3d5bdfa06083
Basically, no it isn't readily available anymore and it would be better to track it yourself.
Jon Colverson wrote:
Hello. I remember seeing somewhere a stat showing how many users had authorized API access for my app, but I can't seem to find it anymore. Is this number no longer available, or is it still there and I'm a dunce for not being able to find it? Thanks. -- Jon
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