There is a rule about spamming,
When it gets obvious, you get a warnings in the form of temp bans and after a series of temp bans, you can get a permanent ban.
Mind you, a lot was sniped from this quote.
Due to the unacceptable level of spam and low-quality posts
Staff do not want to hand out bans for unconstructive posts but if we feel that you as a user are continually making very poor or unsubstantial posts due to your paid signature the following bans will be issued:
First offence: 7 days
Second offence: 14 days
Third offence: 30 days
Fourth: Permanent ban
Your first ban is your first warning. If you have to be banned for a fourth time it is permanent and you will no longer be allowed to participate on the forum under any accounts. Note: If you are banned on one account then you are not allowed to post under any accounts you own for the duration of your ban. The only exception to this rule is Meta where you can discuss the circumstances of your ban if you wish to do so but anywhere outside of that sub will be considered ban evasion and will get your ban doubled, but it is generally best to just patiently wait out your ban and improve your posts on return and hopefully no further bans will be needed.
These days, most of these accounts gets nuked. I reported an account with some YouTube link promotion posts in almost all the users comments and threads a couple of months ago and moderators so graciously nuked the account.
As much as reports might be the way, be rest assured that, they do get what is deserved as at when the time is due.