1. A search system comprising: a computerized appliance coupled to a private enterprise network, the appliance executing software from a non-transitory machine-readable medium; a data repository coupled to the private enterprise network, the data repository storing dynamic personal profiles associated with individual users in the enterprise, individual ones of the dynamic personal profiles comprising content including at least contact information for the associated user, position and responsibility within the enterprise for the associated user, a listing or description of skills and expertise for the associated user, and a history of enterprise-related activity of the associated user tracked and recorded as activity occurs, the activity tracked and recorded comprising projects the user has worked on, customer interactions the user has conducted, documents the user has worked on, research the user has conducted, partners with which the user has collaborated, tags the user has created, blogs the user has created, comments the user has made, documents or pages the user has acquired or commented on, and links the user has created, all content associated with the individual user; and a network interface to the Internet network; wherein the software executing causes the computerized appliance to: present an interactive search interface to a first user, enabling the first user to select to initiate a conventional search returning a page or pages associated with an entered search criteria and identifying a source of the page or pages returned, the search accessing both the Internet network and the internal network, including the dynamic personal profiles of the individual users in the enterprise, or a folksonomy-based search, returning information about who in the enterprise has dealt with in the past or is connected by content in the associated dynamic personal profile to the search criteria entered; wherein the interactive search interface also presents a calendar interface enabling the first user to select a time window, the selection limiting the folksonomy-based search to activity stored as content in dynamic personal profiles within the limits of the time window, and an interactive list of category links comprising at least tags, bookmarks, comments and members, enabling the first user to limit the search to one or more selections from the list of category links in addition to the limit to the time window.