Do your bottom line a favor: Create powerful yet succinct landing pages with strong calls to action that always relate to the advertisement that brings visitors to your page in the first place. (entrepreneur.com)
Here are some statistics and examples of pop - ups that create strong calls to action. (webdesignrelief.com)
On the other hand, a site dedicated to generating a high volume of inbound leads will emphasize strong calls to action and a prominent contact form. (lawyermarketing.com)