Although there are manuals from big - tech companies I've seen with poor grammar in them, I wouldn't expect it in sales materials. (slaw.ca)
Be on the lookout for poor grammar in job postings, as this is frequently a sign of a scam. (blog.gojobhero.com)
If a site is not easy to navigate, or in appears unprofessional because of poor grammar, or unclear statements it's probably not worth spending your hard - earned money on. (asiandatesites.com)