Reputation --> Trust --> Semantic Search in the Enterprise

Reputation --> Trust --> Semantic Search in the Enterprise
Photo by Eric Ziegler
Based on what I have been reading I believe that I understand that semantic search is built on the trusting the content that has been written. This trust can be gained via trusting the individual and can the trustworthiness can be increased by people indicating that they trust the content.  

Based on this assumption and assuming that reputation is built based on both digital and analog interactions (especially in a closed environment like the enterprise), how can a complete picture of reputation (and hence trust) be built within the enterprise? And how can a great enterprise search experience be built without the full enterprise reputation picture being created? I would venture to guess that the interactions in digital will approximate the reputation in the analog world, but then again, that is assuming that there is 100% adoption and interaction in the enterprise digital systems. 

Anyone else have any thoughts?

This note was inspired by +David Amerland 's book, Google Semantic Search - Amazon location 1853.