Just for instant conversation and answers... I help a free software community and probably 75% of all communications happen real time and 'the rest' is in the forum for 'longer lasting records'. Having meaningful real-time conversations to me seems massively important. Note: Because of my experience this is also why I hesitated to create the group myself. It is important for the organization to have control of the account for many reasons...
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Just for instant conversation and answers... I help a free software community and probably 75% of all communications happen real time and 'the rest' is in the forum for 'longer lasting records'. Having meaningful real-time conversations to me seems massively important.