You might be a little bit worried that popup email sign-ups are going to hurt the user experience of your site. But, many bloggers have found that it isn’t bad at all. For example, Dan Zarella, found bounce rates only increased by a very small amount, while email sign-ups were 1.56% higher – which, in the long term, can be a lot of new subscribers.
Some ad platforms will ask more of your landing pages than others, when running ads. For example, AdWords is much stricter, when compared to Facebook. AdWords typically requires that you do not have a ‘thin,’ site that is designed solely to collect leads. Because of this it might be a good idea to focus on using Facebook or Twitter, to begin with.