Here we go again; Google "Smart Tags"

Google today launched a new version of its toolbar that employs a new feature called Autolink that turns non-linked content on Web sites into hotlinks back to Google properties and other sites.... In addition to addresses, it will also add links for ISBNs, package tracking numbers, and vehicle identification numbers.

Here we go again, only this time, I have all my debate points all lined up. You want to know how I feel about this, read that.