used to be a lot of these, maybe still is.
There used to be something called WiSportsbook or some such, where you would pick like 10 games per cycle against the spread and if you covered you got points. At the end of the season they gave like 1000 WiS reward points to the winner, but only like 5 people ever played it, so for a while it was easy rewards just to show up a couple times a day and pick those 100 point dogs to cover (coz they always do) and wait for the free 1000 reward points end of season...