Ninja Popups combines a professionally designed popups to convert visitors on your site/blog into taking an action whether its subscribing into your newsletter, offering a discount/coupon for leaving customers, or locking content until they share you will increase your subscriber count and social signal of your site/blog.

Demo:

http://urlit.me/sKv7O

http://uploadzee.com/KN

http://uploadseed.com/5EX

https://www65.zippyshare.com/v/D2iYLujQ/file.html

https://www.mirrored.to/files/PAMHBRUK/popupplugin461.zip_links