Hi,
I wonder how can i do this.
I got a website, visitors generate some income through ads and i would like to give them back 80% of the income i receive.
Why 80% mate? Are you doing a charity event? Remember whose money and responsibility will it be to maintain and develop the website. It's yours and if you plan on giving 80% of the income then you will just be losing money
I don´t know if it is possible to create an alt coin and based on the income increase the value of it, and block that money to support the coin, so there is always a money to exchange it.
If you plan on making a coin, it's going to be a complicated and an expensive process. What are your goals exactly and your ideas seem to be all over the place