The site The Web 2.0 Summit Points of Control proposes a map which represents the force relation between the most important technological companies.

It is inspired by Tolkien's Middle Earth and the board game Risk.

Moreover, you can make comments about the different relations of the companies.

Possible Xblogtation: It could be interesting (STG section for example) to use the document in a lesson about technologies and companies. They could create their own board game for example.

Here is the link.

this was version n°1.0