Forums are essentially a dialogue/conversation; it's not uncommon for people in a real life conversation to reply with simply a one word reply. As such, this "rule" is incredibly stupid. Consider.
Friend:I think that Brawl will be awesome
Other Friend:DUDE!! You're spamming!! You have to answer with at least more that one word!!
I mean, seriously.
Crusty VGchartz old timer who sporadically returns & posts. Let's debate nebulous shit and expand our perpectives. Or whatever.