I know that CoinMarketCap is doing great, but they have to do it better if they want to maintain a good reputation in the long run. As they continue listing exchanges with fake trading volume, this isn't great as more and more would likely get pissed.
CMC proved to prefer money than reputation and they have proved that time and again.
Like there's one exchange (which I don't want to name them) which my friend thought that their trading volume is so enormous, which is good for IEO. He convinced the crypto startup to do IEO there, and he agreed. They pay for more like $1,000+. You know what? After their first round of IEO, no sales.
If any of these exchanges scammed anyone, make sure they start a scam accusation so that everyone should know about it and in the future no one gets scammed.
They just realized that exchange has fake trading volume, and learned their lesson too. I just hope that CoinMarketCap should implement stricter rules for exchanges to get listed that are not producing fake trading volume.
Fake volumes are a real problem in the market and you cannot trust any exchanges showing those volume and all you need to do is view the alexa rankings and the number of visitors in the site and then you will get a vague idea whether the volume is almost correct or completely bullshit.