They have mentioned some specific times and only in those times they will contribute the 20% house edge revenue to the fund. I gave the suggestion before that why cant they make it flat and they contribute 20% for all the house edge revenue till certain date.
Fair point. I agree that those few hours won't be able to cater to everyone especially for those working or sleeping.
I suggest also freebitco could create like a button where every member could donate any amount (automatic debt from member balance), then the total amount would be donate for this institution in a separate btc wallet address.
This is what most of the multi nationals do. They advise their customers to deposit any amount in the fund and in the end they add the whole amount and contribute the total amount from themselves and then give it as a charity.
So mathematically, it will be like
Total funds donated by players (x) + Freebitco also to contribute the total amount denoted by players (x) = (2x) Double the amounts denoted by the players.