Interesting, but everybody is doing this. I'm just interested in the gambling industry. Every website is investing a huge amount of money for link building, and Google knows this. How to stop this? Give penalty to every gambling website? Google "backlink investigation sector" will be going to search for footprint over the internet?
I believe, If you are providing useful content to another website, and for that paying money and getting a backlink, it is not so bad comparing with all "PBN" in this forum (I try to get a good PBN for my gambling affiliate program, but nobody has)
One more time, If google found all my guest post websites, competitors' guest post sources, I do not believe somebody will going to give a penalty for the best quality content. Yes, we are paying to each other money, sending the gift to each other for backlinks (Its funny), but in the same moment, we providing useful content, and its only the reader's decision to read that.
But of course, if you offer a very poor quality site, try to manipulate the algorithm. In any case, you will get a penalty, but let's be realistic. To get in 1st position, without backlink in a keyword like "best casino online" good luck my friends
Guys, if the google will have that catalog, we will get penalty anyway?