First off .......some of the sources....

http://money.cnn.com/2014/02/19/technology/social/facebook-whatsapp/

http://en.wikipedia.org/wiki/List_of_mergers_and_acquisitions_by_Google

http://mashable.com/2013/07/31/yahoo-marissa-mayer-20-startups/

http://www.out-law.com/en/articles/2014/february/tech-acquisitions-in-2014/

http://www.technologyreview.com/news/525881/what-zuckerberg-sees-in-oculus-rift/

http://www.inc.com/ed-powers/5-key-numbers-a-buyout-firm-uses-to-value-your-company.html

http://appleinsider.com/articles/15/03/16/apple-among-big-tech-companies-reportedly-in-talks-to-buy-boeing-communications-satellite

Ok so the last one is not about app deals......more for fun.

So how do you something that can almost not be realistically valued ? What manner of metrics, figures, mathematics, could be fashioned into an accurate current and future valuation?

How do you value a precedent ?

How do you know value the future?

How do value the cure for Cancer?

Do you value parts seperately and homogenize a running total ?

How is a paradigm shift valued ?

How do you value something thats potentially much greater than the sum of its parts ?

How do you value history ?