I hate to admit it, you can't imagine how much, but the article saved me $16. I was interested in City Prediction because so many of my friends and family are extensive travelers and I was happy with how I thought it worked (VR), but what he did expose of the trick made me lose interest. I don't much care for the requirement and I didn't like the way given to work around it.
The article did sell me on a few others, so I can apply my saved $16 to that and I'll eventually be spending more than $16 anyway, but I'm actually glad that I know what I know now instead of having spent $16 on a trick I'd never bother to use. Had I paid for the app and then learned what I'd need to do to use it, I wouldn't have been happy with the purchase at all and would have wound up deleting it on the spot. With four kids, two cars and a home along with a retirement to fund, the amount of pocket cash my wife and I each get per month to spend on personal interests / hobbies / fun is low enough to the point that I'd actually regret completely wasting $16 because it's about a tenth of what I can spend monthly on my own stuff. So, sad as it is, sometimes even a p***k winds up doing something that works in your favor.