I actually didn’t know this, but you can use Google AdWords to buy advertisement on specific websites.
Let’s say that you want to advertise on Digital Point Webmaster Forum, and you didn’t want to spend money on any other website. Just this single website.
Then you need to do this in your Google AdWords account:
Now, I bet you are waiting for my explanation. As I was about to write it I found that Google had their own, and why copy it? It’s kind of hard to do it better than Google
Take a look at Google and how to use Google AdWords for site-targeting advertising.
This was news to me, and very interesting news indeed.