It's like found art, or found poetry, but instead of coming away with an artifact, you come away with the barest hint of another person's consciousness.
Perhaps I overstate it a little, but try it out a bit, and you will see. It can be, at times, disheartening and disturbing, then by turns enlightening and surprising.
What is it? Why, it's Mystery Google. Where you type in a search query, but what it returns is not your query, but the query of the one who came before you.