Google Knows Everything, Even My Birthday

When I update this site I have to sign in with Google to use Blogger's content management system. When I wanted to look up something using the Dutch version of Google's search engine, I saw something that surprised me. You may have experienced it before but for me it was the first time.
This is what I saw. A bunch of birthday cakes and the message in Dutch 'Van harte gefeliciteerd, Gerard!' Which means 'Congratulations, Gerard!' I usually don't mention my birthday on this site but that's what today is, my birthday. Oh, and the number of candles and stars on the cakes, they don't really tell the truth.