Community management by defintion includes "PR" in that it includes "Public Relations", but a good community manager is much more. They're often there to help

Community management by defintion includes "PR" in that it includes "Public Relations", but a good community manager is much more. They're often there to help facilitate conversations, user group meetings, keep the community civil, agitate for better customer support, and so on. Yes, they're cheerleaders to a certain degree, but pretty much any customer/public-facing role at a company needs to have a bit of cheerleader in them.