Thank you Ensapa for sharing this article, and this is such an inspiring idea!! I was told Christine has long established this practice where it is compulsory to give 10% of your income to the church, and that is one of the reasons why the church has grown so much fast.
All of the Buddhist centers in this world exists because of donations. The first person who begged for donations for Dharma is Lord Shakyamuni, hence he is holding the begging bowl. Therefore, for the Dharma to grow and spread, donations are much required. If we can voluntarily take out, let's say 20%, of our income for the benefit of Dharma, it will be very beneficiary.
Even if we can't start with 20%, may be we can start with 5% first?