I am looking at putting a Yammer group that discusses and collaborates on CA and customer development projects. For me this would be not only beta testing new features to the Probe of Things - A Custom Probe That Does Things and other custom probes I will be working on but also to provide input and feedback on those projects. It could also be help with coding using the REST API or any of the SDKs (if we have people in the group who know the non-Java languages). Yammer has a mobile app that makes it quite accessible and we already use it internally, that is why I'm choosing it over Slack or some other collaboration tool.
If you are interested in joining the group, please email me at firstname.lastname@example.org