Might be interesting to do a NetworkAnalysis of which brands brand others. (It's a kind of FoodWeb.) Bit like those analyses of who cites who in academia.
See also :
- the competition between brands and cultural events they sponsor discussed in NoLogo, brands that brand others are always parasitic and in competition for attention.
- Product placement in rap : (see http://ilx.wh3rd.net/thread.php?msgid=5645161 (see also TheWorldOfHipHop :-)