Hi, i'm sean freeman. i'm a developer. ad-blocking software or ad blocking add-ons on browsers stop from showing up ads on web pages opened on web browsers that support ad-ons. Due to this, business that own websites are unable to make enough money to hire more people to develop product. (now here, you are losing employment opportunities). If a product can't make enough money through advertising, businesses choose other ways to raise funds like charging users directly. (you have to pay for the service now. would you pay 10 dollars to use facebook?). Advertising is the greatest way to make money without charging the user directly. This helps us keep the web free and open for all the people in the world. Web is a great place to find awesome information about anything you need. Every minor or major website is getting effected by these ad-ons. Millions of software products including big guys like facebook, google, youtube and others.