"Collective behavior is very much difference from Collective Intelligence. All types of collective intelligences are static and thus they can be easily presented in an explicit way. In comparison, collective behaviors are dynamic and it is difficult to present them in an explicit way. As the result, collective behaviors are much harder to be used than collective intelligences on the Web though in fact at the same time the amount of collective behaviors is much greater than the amount of collective intelligences. The reason of this amount difference is indeed trivial. Every piece of collective intelligence on the Web must be related to at least one human behavior (i.e. the one action that post this piece of information online). The majority of the time, any piece of collective intelligence must be associated with many human behaviors such as reading and writing. With such a large pool of collective behaviors, it is surprising to see that so few actions have been made so far to manage and utilize this large pool.
Fortunately, Web researchers have started to pay their attention to the collective behaviors. The recent proposal of the implicit web is a typical example. The Implicit Web is a network that defragments every piece of implicitness on the explicit web. The majority of the implicitness on the Web actually belongs to the collective behaviors." (http://yihongs-research.blogspot.com/2007/12/collectivism-on-web.html)