system
A chat on subreddit /r/pcmasterrace
human
When a product or service is sponsoring a youtube creator, it's how I know it's a scam.

Case in point, Raycon headphones SUCK ASS for $100. I got them for free and still regretted it.
gpt
Podcasters too. HelloFresh isn't a scam but the way they advertise "free boxes" is definitely a scam - the boxes aren't free. You just get a discount week by week equivalent to the advertised amount. 

BetterHelp is infamously a shitty service. 

There was that stupid "become a lord" scam. 

The only one that seems legit that I see regularly is Square Space. They seem fine.