I've seen this before. But only very occasionally.

This is old news. The first I saw those was late last year probably around November, December. They appear when you click on some locations. They really don't get in the way, and they are highly relevant.

Well how else do you think they can give it to us for free?

Or is right, in december it was already online. When you enter "hostel" or "zoo" you can see many ads ;)