I only mean that people think grammar isn't important. "well you understood what I was saying" gets tossed out a lot. The logic being that if you are smart enough to deduce my intention then it isn't important that i didn't use the 'correct' vehicles to convey that point. But things do get lost in translation and time is often wasted with the reader having to either take extra time to understand the intent of a post, or there has to be further elaboration to make clear a point that could have been made with some initial attention to and appreciation of proper grammar. Grammar isn't natural construct, it's just a set of rules set forth to facilitate the transmission of thought. That's why, to me, in a place such as a forum, where the ultimate focus and use might be of a casual nature, grammar matters very much as we are writing to eachother as our only means of communication. When we *******ize the mode by which we communicate, to me we *******ize the communication itself.
I don't go around correcting stranger's grammar, but on my end, I do form opinions about those who don't take the time or have a basic understanding of the written language. I also tend to not read posters who consistently forego any thought or care to grammar and spelling.
That all probably doesn't really answer your question of elaboration. I suppose I just mean that the systemic issue is that people either think that grammar doesn't matter in much the same way smart kids in class get teased, or they simply feel that communication is more the job of the listener than it is the speaker.