You are probably thinking along the lines of buying some piece of magical software that you do multi-threaded or multi-account group posting for you.
That is not the way to go forward because Facebook is actively tracking down group spams.
It's only a matter of time until URLs and domains get bad in addition to the accounts that promote them.
You need to stay several steps ahead of Facebook.
The best way to do that is to invest in two things.
First, invest in a proxy bank.
Second, invest in a virtual assistant.
The virtual assistant will manually post your materials for you and more importantly, pay attention to how group members engage with your content.
This is the most valuable part of hiring virtual assistants to post your content on Facebook groups.
They are your eyes and ears as to the community that can give you tremendous feedback on how you can take your content to the next level so it can produce better results.
The second thing that you need is to invest in a proxy bank.
Do not think that just because you are switching from one account to another to post your content, you are free from Facebook's prying eyes.
That is absolutely wrong.
You need to be proactive in protecting yourself, otherwise, you can kiss all that hard work goodbye.
Do things manually.
Avoid the temptation of using a BOD or software because that is a one way ticket to failure sooner than later.