I appreciate and honor good grammar and spelling, anywhere except notes. I don't mind if you spelled something wrong when you were taking notes for a meeting, school, et cetera. I'm also more lenient with fast-paced writing where you may have switched your thoughts mid-sentence (grammar) or mistyped (spelling) and never corrected it because you didn't proof-read.
I tend to judge people who use chatspeak and/or poor grammar. If English is not your first language, you have a learning hindrance, or some other similar reason, I try to be less judgmental.