Superb case study on the viral marketing of The Dark Knight

Not sure what viral marketing is? Struggling for an in-depth example?
Have a look at this BRILLIANT case study from 'robertclackmedia' on slideshare. 

This is a great example of viral marketing and something which could be really important for AS Film Studies, but also has some great examples for GCSE Film Paper 1.

The dark knight marketing from robertclackmedia