This happened twice today while playing. First I clicked on my Houses icon and suddenly a new page started loading for some Rollercoaster game and I had to quickly exit and reload YoWorld. Then just now I was in a room and I clicked the arrow to go into another room and the same thing happened only this time it was a Facebook Casino game. I never was near any of the ads for games on the side of the screen so I didn't accidentally click or hover on one.