I love this topic. If software companies are looking to make non-linear jumps in the value that they bring to the market, this is one of those key areas. What’s clear to me is that the way that information is developed, referenced and stored has been changing. The ol’ file cabinets of papers are now not only electronic, but distributed in an endless number of websites, folders, wikis, blogs, and so forth. Even the subsequent use of storing info in your PC desktop folders is passe. In the old days, if you were looking for information that was not in your library, you had to make request and wait for that information to be provided to you. Now, the expectation is that content is available immediately. I think that it’s OK that a single search engine cannot index and track everything out there. But there is a need to federate multiple search services. The key would seem to be under the “Link” area. In order to leverage all of the info out there, there needs to be a flexible, growing model of those relationships between sets of information. PLM can be a place where the ownership of many relationships can take place. But it can’t own everything. I would think that the need to communicate those relationships with other such federation engines would be required for Enterprise 2.0.