How targeted is targeted

[pcgamez]

I run a site that currently deals with fiction books. In the near future, we are going to begin having non-fiction books.

Example: A page relating to a book about computer networking

Am I going to get ads for books (for which the cost per click is pathetic), ads for networking related stuff (which I would preffer), or a combination of both?

[danny]

My "networks" book review index page gets a mix: networking products, some networking books, Australian technical bookshops... Sometimes they're mixed up, more often they come in waves, presumably as the AdWords prices go up and down.

[Macro]

you could get ads for fishing nets! Seriously.

People with ads for PCs (running Windows) are getting double glazing ads. Windows, Double-glazing. Geddit? Hilarious :(