Guys, why all the vitriol for this article? Slashvertisement? It doesn't matter. He went out of his way to point out two different apps and an experiment that he did, where he shared the results.
The topic, for the TL;DR people is essentially why are good apps unseen while poorer ones are popular. He cited ParkMe and BestParking as his basis of research.
It's a questions that would apply to nerds want to popularize an app, but don't understand the phenomena that encourage apps to spread regardless of feature set.
Personally, I use BestParking for my trips to New York City, but agree that it is rarely discussed, so I guess it is rarely known. Maybe it is the nature of parking. Many people who park want to park and move on. They don't think about it after the act, so don't want to think about it much earlier either. It is not a long, drawn out thing (like finding a place to live) where you often plan. Additionally, you can't easily use the app while driving, which is what you are doing when you most think of needing to use the App. So maybe this one is the nature of the activity itself. People don't think about it, so it never gets enough buzz to become a topic of conversation so the knowledge of it doesn't spread.