It's ok - all feedback is useful.
Basically, when we review a marketplace thread, we check the service provided against the promises made by the seller in the OP.
If they're promising certain metrics, content quality and do follow links, then that's what we check and what we'll base the approval decision on. It's quite possible that some of these are PBN's but unless they're explicitly claiming it isn't a PBN, we won't check for this during the review.
2 reasons:
1. There's only so much hand-holding we can do. Buying blackhat services will inherently carry a certain amount of risk and buyers should have - at the very least - a decent basic knowledge of bh seo. We love good quality services but there is also a place for cheap low quality services too. As long as the buyer is able to make an informed decision about what they're getting, we won't discriminate.
2. Every service here has too many potential variables - there's no way we can check every possible scenario and rule them out. For example, if someone's promising backlinks from sites with unique C class IP's, then we'll check that this is delivered. However, if they haven't mentioned different subnets or different whois entries, then we won't check it. Someone who's buying a service might consider those aspects very important, so they need to make sure it's specifically mentioned in the thread.
Again, it comes back to the buyer knowing what they are doing. We have sellers on here, like
@t0mmy, who will just refuse to sell their services to people that don't understand what they're doing, don't know the potential risks and rewards, and aren't capable of making an informed decision. I've had a couple of noobs complain that they've been refused but, honestly, turning a sale down for a buyer's benefit is great customer service and I'm all for it.
So, if it's important to you that your guest posts aren't on a PBN, then make sure you find a thread that states this explicitly. If it has been promised but not delivered, then that's a bad service from a bad seller and it needs to get resolved or we don't want them on the forum. In that case, it needs to be submitted here:
https://www.blackhatworld.com/forums/dispute-resolution.31/