You might also find these this G+ communities interesting:
- Chromium OS - Community of hackers, testers, developers, or those using other builds of Chromium OS.
- Chrome OS - chrome, chromebook, chromebooks, Samsung, Acer, android, google, Pixel, HP Pavilion, Lenovo, chromebox, chrome releases, chromecast
- Chromebook Users - Tips and Hints from REAL users
- Crouton Users - crouton: Chromium OS Ubuntu Chroot Environment