As LoopNet’s VP of Marketing Mike Manning showed the audience at our Subscription Site Summit this past week, a “faked” (HTML) overlay on a landing page can increase conversions significantly for a site.But in this week’s Case Study on our sister site, Subscription Site Insider, Mike Zenga of SportsBettingProfessor.com shares with readers his experience with overlays. Zenga originally had the site coded to offer an “exit” overlay when people were looking to abandon the site. Also known as friction points, these overlays often ask site visitors to engage once more before leaving, clicking “Stay on page” or “Exit” before they are allowed to navigate to another page.While some sites have had success with these types of overlays, Zenga and his business partner felt they were just annoying. So they decided to remove them and see what happens. To their pleasant surprise, there was no decrease (or increase) in conversions. So they’ve decided to remove exit overlays permanently from the site.As Justin Rondeau, Editor of our sister site WhichTestWon.com would say, this is why you always need to test your pages. Consumer behavior and conversion rates will vary by site, by niche, and by topic. So learn from the best, but always do your own research.