I found out yesterday that my mom spent the entire day on youtube.com.
Now, for many people, that's not an atypical event.
But we're talking about a person who:
1) Doesn't normally use the computer.
2) Does not understand what a URL is.
3) Does not understand how to use the forward/back buttons in a web browser.
3) Does not understand how to use Google.com.
4) Had planned to spend that exact day out shopping.
It is essentially proof that Google can now reach people who don't know how to use the internet.