"I like the direction of this PR [...]"
"These changes are a nice improvement. [...]"
"r+, thanks!"
"That's an interesting question."
Big thanks jdm and the servo project for being so responsive to issues and PRs. I guess using the same communication and code sharing mechanisms (wiki, open bug tracker, pull requests and code review) for internal work AND for external contributions eases the observation and integration of contributions.
[1] How to discourage open source contributions https://news.ycombinator.com/item?id=8712349
[2] The reason people burn out on open source https://news.ycombinator.com/item?id=8712035
[3] https://github.com/servo/servo