They are taken down and warnings or infractions issued if the poster is habitually doing so.What also ticks me off is the ads being posted for things to sell and no pics of the item for sale being posted in the ad but the poster lists a number to contact by call or text for more info or pics. If I remember correctly, the rules state that pics must be posted of the item/items for sale in the ad.
I am 100% sure you are aware of the warning and infraction system.
There is a report also button.