+ BrandRepulic has a article on a new feature from Google. After visiting a brand site, it's now possible for ads for the brand to follow you around (at least if you visit other sites within Google's Contest Network).
Google is calling the new feature ‘remarketing'. It enables advertisers to tailor online ads based on users' web habits.
People would be able to opt-out if they wanted but is it true permission marketing if someone just goes to visit a website? Seems to go against everything that is currently set up for purposes of "opt-in" rules.
Some might feel like they are being stalked by brands, and some just might not notice it. Either way it is interesting and could have potential.