Well, for one it's much faster than the github mirror. Browsing files is at least 10x faster. And getting away from the mailing list send-patch workflow is huge

Well, for one it's much faster than the github mirror. Browsing files is at least 10x faster. And getting away from the mailing list send-patch workflow is huge. Though they could have that for free also. self hosting could drain too much resources I fear.