bossbird: I wonder if it makes a difference where in the world you are. Certainly I never see 5 second ads
It certainly does! Only people in the US have ever said they get 5-second videos, no one else! Anything east of the Atlantic and it will be a minimum of 30 seconds now, and like you say, more and more are now 60 seconds. But it doesn't end there; once the 60-second video finishes you have to click either a >> (Fast Forward) or a X (Close), then 5-10 seconds later another >> or X, then another 5-10 seconds later one more X. a 60-second video now becomes 70-75 seconds! Some countries can't even get videos for credits! Everything in WGT is done for the US players for the most part, they don't really care about the rest of the world.
I play lots of other games, and often between levels you will get a video which you can >> after 5 seconds, which takes you to another >>, then a X, and then on some videos yet another X. Now all of a sudden a 5-second video is 20 seconds!
These ads are all scams, often like most of their content (e.g. TesterUp, Mistplay, and many others).