Clickthrough
When a user clicks on an ad and visits the sponsor’s Web page, this constitutes a clickthrough.
The clickthrough ratio measures the percentage of all visitors to a Web site who click on a given link or ad to get to your site.

Clickthrough
When a user clicks on an ad and visits the sponsor’s Web page, this constitutes a clickthrough.
The clickthrough ratio measures the percentage of all visitors to a Web site who click on a given link or ad to get to your site.