Match bonus

27/12/15 22:52
Why do I pay a match bonus, how can I change the rate that I pay as a bonus?
27/12/15 23:15
When you go into matches theres a slider at the bottom
01/01/16 10:30
Do you think players make it better when bonus is higher? Or this is another thing absolutely usefulness?

EDIT: just saw it gives extra quality points. Ignore my question.