The problem I see in a post that has absolutely no punctuation or grammar skill is that it appears to lack any kind of maturity to it. More often than not I find those type of posts displaying little more than the rants of an annoyed or excited person. They're about as entertaining and informative as listening to a pink-clad 14 year old trying to tell the story of the hot guy she bumped into on the street:
like omg he was so hot like i cant believe i was in the same space that very moment like i wish he would have asked me for my number i would have like written it to him on my shirt and like given it to him right there
Damn, I'm so naturally used to grammar skills and punctuation I had to actually work hard and making every error possible in the above statement. I literally had to delete commas and capitalized letters.
At the same time, my friend, a rather intellectual individual, is currently enrolled in med-school. He is extremely book smart in all matters of mathematics, physics, and chemistry; however, he wouldn't manage to write up a note for a to-do or grocery list if his life depended upon it. His writing is complete shite, forcing everybody to avoid having to communicate with him with notes or messages. His text messages are so incoherent and useless that I end up phoning him to ask just what the hell he meant. So there are very intelligent people out there that simply cannot be taken seriously when they can't do the one thing in simple communications that's likened to tying up a shoelace.