He explains it here: https://github.com/torvalds/linux/pull/17#issuecomment-5659933 https://github.com/torvalds/linux/pull/17#issuecomment-56599... In particul

He explains it here: https://github.com/torvalds/linux/pull/17#issuecomment-5659933 https://github.com/torvalds/linux/pull/17#issuecomment-56599... In particular, "the quality of stuff I have seen from people who use the github web interfaces has been so low that it's not worth my time."