For me, it depends on a number of factors. Among them: what service I am hiring the person for, what context their writing was in, and whether or not they were expressing a personal style or voice.
Dan has a journalism degree. He and I have very different styles. I wrote very well in college and loved pouring out lengthy analyses in the 30 page writing assignments I was given.
Dan criticizes my writing now because he says it often sounds too academic. I have to very consciously add a voice to my writing and that usually means I have to not be so uptight about my grammar.
There are many opinions out there about writing styles in blogging. Generally what I've heard is that blogs should be written in a casual, personal voice, like the kind you use in emails with friends. When I write in that voice, I'll use run-on sentences and a lot of dashes.
All that aside. I think spelling is VERY important and regardless of their style and whether or not they're following the basic rules of grammar, if their writing and emails are full of misspellings, I assume that they aren't very good with details.


