I was on this WordPress theme site that I hadn’t been to before and below the main nav is this row of text:
Ads By Google WordPress WordPress 2.0 Blog Themes Blog Skin
And they’re all linked, and I didn’t even notice that the first one said Ads By Google. I went straight for the WordPress link and guess what? It’s a Google Ad page. That’s tricky — it looks like it’s part of the main nav but it’s part of the Google Ad links. They got me!
Certainly an interesting way to make ads part of the content, and to get users to click where you want them to.