Do grammar and spelling matter on a message board?

[Thornir Alekeg]

Both matter, but not to an absolute level.

I can tolerate a certain level of poor spelling and/or grammar but if the message is so poorly written that I have to expend a lot of brain power decifering it, then I will just ignore it.

 

[the Jester]

Not necessarily that it's vital that they be formal. Not that it's even necessary that they be accurate. But that they should be exactly what you intend to convey, whether that be formal, casual, or even sloppy.

I think Hyp got to the nut of it here.