gitter

https://gitter.im

- github flavored markdown
- emoji
- syntax highlighting
- uses github account for user login
- has customizable repository activity sidebar

It's very easy to setup (press a few buttons).
It can allow for github users to make a comment or ask a question,
without needing to sign up for anything.

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I first noticed it at the top of pencil's README.md
https://github.com/prikhi/pencil

It seems like an upgrade from IRC... but then I'm never on IRC.

I'll email your niece next time... ;p

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