I want my students to watch this video. It has such a great summarization of things we have talked about in other classes. In another class, I have my kids develop a set of links on a topic, and have them evaluate each one. I have found it beneficial to have them evaluate 1 like from the first google page, one from the 3rd and one from the 5th (adjusted as the topic needs). And we discuss the algorithms; but it's not been as succinct or well-put as this.
I would use the demonstration with a current topic as shown, and do the compare and contrast with different google screen shots. I know that when we did the scavenger hunt at the workshop, we all commented that we needed to revise it. Too many things did not need us to go beyond the first page of google, and some of the great tools were never needed or seen by the kids.