ADT: Adult Content
ALC: Alcohol
DLM: Downloadable Material
DRG: Drugs
HAT: Hate Speech
OFF: Offensive Language
SAM: ???
hubski.com:
Not that it matters.
This is one place where cryptocurrency may prove helpful. Rather than get pennies per impression from ad companies, sites can get pennies per day per user without flat transaction fees that are several times the value of the transaction.