"Enterprise 2.0" has become a catchier term, sometimes used to describe social and networked changes to enterprises.

Social software for an enterprise must (according to Andrew McAfee, Associate Professor, Harvard Business School) have the following functionality to work well (McAfee 2006):

Search: allowing users to search for other users or content

Links: grouping similar users or content together

Authoring: including blogs and wikis

Tags: allowing users to tag content

Extensions: recommendations of users; or content based on profile

Signals: allowing people to subscribe to users or content with RSS feeds

Source: WIKIPEDIA