Incorrect or no punctuation can really screw up your message e.g.
How about:
I'm off to help my uncle, jack off the horse.OR
I'm off to help my uncle Jack off the horse.(I'll be the first to say 'Small things amuse small minds')
Personally, I've been on here long enough now that I've come to the point where I can get a feel for the comments made by the person who made it. You've got the one line repliers, the essay writers, the passive agressive types, the know it alls etc.
Sometimes I've gone into a members profile (yes it does feel like stalking!) and you get a feel for their general tone/misdemeanor just by reading their past posts.
Not only is punctuation and spelling a problem, but a lot of the time a persons comment can be misconstrued by the fact you don't get to hear the inflection or tone of what they're trying to say, compared to hearing it in person.
That's my opinion and God dammit, you would all abide by it if I had my way.
Anyway, I'm off to see uncle jack...
LJ