10th December 2011, 02:28 PM
I've always found that "clear" and "ridden with grammar and spelling mistakes" were incompatible notions... If I have to struggle to read something because it is very poorly written, it generally has a negative impact on my understanding. Which is probably why grammar and spelling rules exist in the first place. Sticking to them insures that a message is understood and that a reader doesn't wonder what on Earth the writer meant.