Online Advertising Project

I'm studying MBA-HR 2nd year and i m in confusion about project topic.
actually i like to do project in 'Online Advertising' services like Google,Yahoo..etc!
but which topic aplicable for it? and whats the benefits with this project after mba?
please give suggetions as early as posible.

Sunrise,
Given the fact that you are doing an MBA - HR pick up a topic for project which is related to HR that will be more helpful for you to understand some aspects of HR in detail at least theoretically & also in future whenever you will appear for a HR interview as a Fresher the interviewer will also ask questions related to your Project just to gauge how much conecptaully clear are you after that project on a particular topic & thats where you can score a point.
At the same time if you are really keen on doing a project on something like the one you have said above then i will suggest better you link that kind of project with some aspect of HR.
Just for example you can try to make a project on :
a) HR Managers as Brand Ambassador of Companies
C) HR Practices in Google, Yahoo