...but I do expect that people show some sort of intelligence...
-Josh
Well, you may as well lower your expectations. Most people are lazy.
Standards for writing seemed to have dropped
considerably over the past few years.
Even CNN & MSNBC are guilty of this, but no one seems to care.
As long as it's not being pointed out to writers, it will just become more and more accepted.
I think Carol has described this before as, 'entropy'.
Personally, grammar & punctuation errors only bother me if I sense that a post is inconsiderate to the reader, in general.
Infrequent errors are inevitable, but lack of structure, rambling, etc., are signs of thoughtlessness IMO.
It's the writer's job - not the reader's - to make a post or article understandable.