You can Win a 75$ American Express gift check by spending 60 minutes in the Blogger usability study. What you will have to do is Go and register Blogger usability study.

Details of the study:

The duration of the study session is 60 minutes
You'll receive $75 in American Express gift checks as a token of our appreciation.
To participate you will need to:
   -Be at least 18 years old
   -Accept the terms of our Usability Non-Disclosure Agreement
   -Allow us to video or audio record the session
   -Have a PC computer running Windows 7/Vista/XP/2000
   -Have a broadband Internet connection (DSL, Cable, T1 all fine).
   -Have a phone you can use comfortably while working on your computer for the duration of the study session. A speaker phone or hands-free headset is recommended.

Read more on the registration page given above.

[Via Quick Online Tips]