This site becoming an all GM site! That'll be the day! 
Actually, a large number of ads that appear on the site are delivered via one of our advertising companies (I use a couple different ones). A lot of times companies placing ads on the web do so based on a target "category", like "Automotive". Any site that is listed under that category would then receive those ads. The ads targeting a more generic category, such as Automotive instead of something more targeted like "Makes and Models" or even as targeted as "Mustangs" or "Fords", are less expensive. The more targeted your ad placement the more expensive it is.
Our category placement with our ad suppliers is:
Code:
ALL SITES
|
| ----- Automotive
|
| ----- Makes and Models
|
| ----- Mustangs Works
So, we'll get ads targeted to specifically us, and up.