It's interesting, though. I've watched conference talks from about 5 years ago where Yammer is commonly referred to as a medium for internal communications by S

It's interesting, though. I've watched conference talks from about 5 years ago where Yammer is commonly referred to as a medium for internal communications by SMB types (Business of Software, I think? Sorry, can't find a link at the moment.) Those same recommendations now go to Hipchat. Is their marketing the only difference? (ie. was Yammer once more palatable to small businesses for their marketing, and have they now changed that, with Hipchat filling the void? Or is it more than that?) I don't know the space well at all, these are just observations from a distance.