Every other forum I'm on about media and pop culture spoilers are always enforced by staff/mods. On Movie sites video game sites etc.
It seems on here like half the people don't use it. You can go into a random thread about a comic and someone will just give the entire story away with no spoiler warning.
I would have thought for a comic book forum the comic nerds would take this more seriously as its a big problem at least to me . I know you go on my movie forums and try spoiling the new Avengers movie with no spoiler warnings you're going to get a flaming and possible infractions for violating the sites TOS.
Of course new people get warnings but to keep on giving big plot points with no warning sucks for people just trying to get into it.