The Information Advisor recently published a useful article, Enterprise 2.0: Is it Knowledge Management by Another Name? Disclosure - they interviewed me as part of the article ☺ - and then used some of my comments. Specifically, they said that enterprise 2.0 as a term seems to be sticking, it is not web 2.0, there is a useful role for social activities at work, and enterprise 2.0 tools need to be developed to solve business problems. This last issue is critical in making tool selections. You need to be certain that the enterprise 2.0 tool provider is not simply bringing a web 2.0 tool into the enterprise. I also said that enterprise 2.0 is an opportunity for knowledge management professionals and corporate librarians to take a leadership role into making sure these tools are selected and used properly. BTW - I think the answer to the question in the title of this post is - yes - but enterprise 2.0 is also more than KM.
The article has a nice review of the Awareness platform that I have written about a number of times, including some of their enterprise 2.0 success stories. There is a good case study of one of their clients, Sg2, a US healthcare information intelligence organization. There is much more in the article. I have only hit a few highlights. Thanks to the Awareness people for posting it on their site.