I'm just coming off a week spent at the Enterprise 2.0 conference in Boston: Enterprise 2.0 Conference
My general feeling is that this market is in the early stages where the food chain isn't clear. There are a number of collaboration companies that classify themselves as E2.0, but it's not obvious what if any greater capability they bring to users. Even more daunting is the lack of clear financial benefit to this movement. Though some dismissed my constant badgering of speakers/presenters as to the ROI, I think it's important that financial metrics be established to enable faster adoption.