Banner advertising, when set up using a system like I presently use, can be very hands off – in fact for me it’s entirely passive – assuming there is an audience that the sponsors benefit from advertising to. It’s difficult to make loads and loads of money just from banners unless you have significant traffic, but it is easy enough to make some money from it and once you do, it generally proves very reliable unless you stop updating your website.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.
Smart Animated Popup is a jQuery powered plugin for creating normal or modal popups with custom positioning, popup open/close animation effect, customized overlay and popup looks, tons of settings. And it's responsive.
Plugin has over 20 animation effects you can assign, with additional 'random' effect that will pick random effect on every page load.