The wiki is actually getting more active, I think we have 20 more active members than last month if I'm not mistaken. If we're talking about grammar mistakes:
Almost no capitalization;
Spacing is unpleasant, making it harder to read;
Months aren't capitalized;
Lack of commas;
Words spelled wrong, such as: diffrent (two times), togethor, fidning, happend, elvators, disclamer, no (now) etc;