When exactly? As far as I can tell this is a never-ending contest, so are you donating the proceeds to charity on a rolling basis as soon as you receive them?

When exactly? As far as I can tell this is a never-ending contest, so are you donating the proceeds to charity on a rolling basis as soon as you receive them? And are you donating 100% to charity, or using a portion to pay for the website/server/bandwidth/development costs?