"Remember: if it isn't worht reading it isn't worth posting" Most people think everything they have to say is worth posting. I'd rather something specifically

"Remember: if it isn't worht reading it isn't worth posting" Most people think everything they have to say is worth posting. I'd rather something specifically aimed at short comments, as mentioned above. Something harsh aimed at something under, say, 100 characters, and a brief little reminder towards something under 100 words?