Ask HN: Cloud Based App like Yammer for collaboration with different domains
Is there an application like Yammer that can be used for users from different domains? We want to use it for our hobby group. but we all work at different companies.
As described on Yammer: "External Networks are separate Yammer networks used to communicate with external groups, like customers, partners, contractors, and fans of [company]."
The drawback is that an existing Yammer domain would "own" or have control of that network. I know it's probably not exactly what you were looking for, but it might be one way to get to use Yammer istelf.