I bloged a while back about the Dr. Dobbs on Measuring API Usability.  I just got permission from the nice folks at Dr. Dobbs to post the article publicly for your reading pleasure.  

 

Any teams at Microsoft you think I should print off a copy and hand-deliver this to ;-)

 

Love to hear any comments or questions you have on it.

 

Update 4-17-2007: Updated link to the paper...