Are advertisements valuable primary sources/reflections of culture? Why or why not?

2 answers

I think that advertisements do reflect our culture. Companies and politicians spend big bucks to know their intended audiences and appeal to them.

What do you think?
Read lots and let us know what you think:

http://www.bing.com/search?q=advertisements+as+a+reflection+of+popular+culture&form=EDGNTC&qs=PF&cvid=66ec51f8cf1849e78166679b2f31aac3&pq=advertisements%20as%20a%20reflection%20of%20popular%20culture