You might have come across ads on your mobile phones that cover up a part of your screen. These are mobile ads which appear as popunder ads and sometimes as banner ads. They have a very good success rate as most of the internet users have now started using smart phones and use it to browse through the net. People use a lot of mobile application also and it can also be used for promoting the website. There are many websites that use banner ads for promoting the website as they have a very high success rate. The popunder ads are published on the mobile browser. So when the user browses through the mobile browser, then the ad opens up over the window and is visible to the user. When the user clicks on the ad then it takes him to the advertised website and helps the website to get more traffic easily.
When you want more traffic then you can buy mobile ad traffic and buy banner ads or mobile popunder advertisement. They are display ads and are noticed by the user easily. If you want good results then you can buy mobile traffic and use it to get more business for your website.