For what I have picked up, one or two flags give a head up to the mod team on the post. Given enough flags, removes a post from the visible pages.
With a spamtzunami like yesterday, that wont help keep the forum clean, but I believe when spam attemps start, it can buy some time and be somewhat discouraging when the spam isn’t an automated generated one.
according to this theorized function, enough people do indeed make a crowd.
