Can you tell us what sites is forbidden for boosting so it will also help other users so they do not do boosting/ranking.

I would personally would like to know about it so i can ask my players to refrain for ranking/boosting to bring players instead we do advertising .

Thanks.

i mean in particular which sites they are so the server owners can inform its users refrain from boosting , the default server have a plugin for boost so i will appreciate if you can mention those sites so we can blacklist them because i do not want unnecessary my server and others servers gets De-Ranked for apparent reasons.

this information can be useful for everyone so they can bring real traffic instead to boost or use some ranking service.

Thanks.

My original response was unintentionally deleted.

I think the top post in Guides & FAQs is quite clear on this:

Boosting your rank, pay-to-win services, Please Read!

It is absolutely clear, there is no ambiguity.
We are not going to provide a list.
There isn't one.

'Boosting' is not acceptable. At all. Ever.