ken_b - 7:02 pm on Nov 30, 2010 (gmt 0)
And what is with this part of the quote?
You are looking at this as a whole. But it isn't a single issue.
You can block some ads but not others.
If you visit a Toy store that uses adwords, you can not block those ads so YOU do not see them on your site. That's a "previous interaction" ad.
But ads from other toy stores that use Adwords will not show on your site. Those would be "category" ads. Those you can block.