You may want to try Spell Checker Tool where it checks not just spelling but also grammar, punctuation, writing style, and a lot more! www.spellcheckertool.com FREE DOWNLOAD! ^_^
How come you're not blind to these ads? I honestly never see them consciously. They just enter my brain subliminally and I buy the things they advertise :-)
I can't help but be appalled at poor grammar in adverts, and anywhere else tbh.