It shouldn't be a negative, but it certainly lowers the ceiling a bit.. You're not going to have a bunch of people suggest that someone who types "omg i h8 dis guyz" is worthy of a SoA.

Grammar/Spelling/Vocabulary 35% (total), Content 65%. Grammar/Spelling/Vocabulary would be enough to block you from a SoA (unless you have some REALLY good posts), but probably not enough to be BLIS-ed on that one merit. Even if my percentages suck for some reason, I still think it should be a weighted average.