I disagree. You can market an app if you have a real product but I will not install an app to read your newspaper or to see where your shop is. Not even to look up a cinema. Unless there is a real need for client side interaction I dread apps. I don't want to basically have your website on my phone that I now need to update regularly. And I certainly don't want to do social with my grocery store. Where is the added value for me here?