Trefis provides some great reports that show up in my Etrade account. Their analysis is very thorough. I especially like how they break down different business units and how much of a stock’s share price is tied to each unit.
Trefis values Facebook (based on the limited pre-IPO information they have) at $74 Billion, based largely on their advertising business and growth via a growing user base (from 800 million to 2.6 billion) and increased ad revenues from video and music services Facebook is working on.
Here is the report.

They go into …