In an excerpt from a book by Alvin I. Goldman--Knowledge in a Social World--I found the following question, and the beginning of an answer in Chapter 4--Testimony:
Does a high level of social knowledge require a high level of social interaction?
If we mean by "high level of social knowledge" a high aggregate of knowledge among the members of a community, the answer is: not necessarily. In principle an impressive aggregate of knowledge might be acquired if each member independently explores and discovers the facts of interest. A hallmark of human culture, however, is to enhance the social fund of knowledge by sharing discovered facts with one another.
What of weblogs as testimonies, and group weblogs, or weblogging cohorts, as 'aggregates of knowledge'?
Lilia Efimova posits that Aggregation can kill personal voices.
K-Collector Topics: blogging Knowledge Management Weblogs