Commenting on Mark Zuckerberg's letter to Facebook investors

Call it the gospel according to Mark, or the thoughts of Chairman Zuck, it is an extraordinary document.

The <link> <caption>letter from Mark Zuckerberg</caption> <url href="http://www.bbc.co.uk/news/technology-16859527" platform="highweb"/> </link> which accompanied Facebook's IPO filing is rather different in tone from the mission statements issued by a conventional chief executive.

So will it inspire or terrify investors?

Let's try a bit of textual analysis: