Progress-Punch Card for WordPress Keeps People Reading Your Posts

Nothing is more frustrating that writing a great article only to realize that most people don’t read it. You can always incentivize your readers to do so by rewarding them with coupons. This Progress-Punch Card code can do just that. It puts a tiny widget that stays in the bottom-right corner and shows a punch card with 5 circles. Each time the reader scrolls past 25 %, 50 %, 75 %, 90 % and 100 % of the article, a circle fills with a “punch” animation and a soft pop sound.
When all 5 are punched, your visitors get an instant coupon or download link. 

You can change the coupon code to anything you want. You can also include a download link. What’s neat is this code also encourages your visitors to tweet your post, so more people can enjoy it. The entire code is about 50 lines.