Microsoft Conducting Study of iPad Users

"Microsoft is seeking iPad owners to take part in an in-depth study as the company plans its own breed of business-focused tablets.Microsoft User Research has launched the study and is now seeking iPad owners willing to take part in the two-hour session at its headquarters in Seattle."

I guess if you're going to do research on how people use a tablet computer, you'd want to study people using the best tablet currently available.  I'm curious what the "Microsoft gratuity item" could be.  I'm also wondering what, exactly, Microsoft is looking for?  Is it how the user interacts with the device?  What apps they use most?  How much time they spend it with it?  All of the above?  Would love to hear your ideas on what exactly Microsoft is looking for.