I just want to point out that (1g protein / 1kg body mass) is high, but not a ridiculous amount for someone doing lifting. The rule-of-thumb number I've seen quoted a lot is (1g proten / 1 lb body mass), or in metric, (2.2g protein / 1kg body mass), as the maximum useful intake.
1g/kg is at least double what most people eat :) it's ridiculous from a general population standpoint. Personally I aim for more than that, but I'm not sure it's indicated for people who don't work out.
