Yes. You can see how many people click are clicking on your ads. Please note that this is currently only available on "Image" ads and not "Rich Media" ads.
To view click counts:
- Log into the site with an admin account.
- Click on "Administer Site" in the menu.
- In the left menu, click "Modules", select "Banners".
- In the list of ads, you will see click counts for all ads.