I am looking for information regarding the relationship between media buying agencies and advertising agencies

If you're after detailed information, I would advise looking up trade publications and associations to find out what kind of reports and primers they have. In the UK, try campaign magazine - http://www.brandrepublic.com/magazines/campaign/index.cfm, and the advertising association -http://www.adassoc.org.uk/html/information_centre.html. Then going from there if you look at a few media buying agency web sites you'll get a good idea of the services they offer.

Politicians wage wars to keep people under control, just like the egyptians building the pyramids. Today, our politicians employ these people to spy on us. They claim to be looking for terrorists. Then they tell us that returning veterans from Iraq are terrorists. People who voted for Ron Paul are terrorists. People who are pro-life or believe in the Second Amendment are terrorists. People who want the Federal Reserve abolished and to return to the gold standard are terrorists. These people are a threat to freedom and our form of government. We pay their salaries and they spy on us, and call us terrorists. They are the real terrorists.