Do companies use grammar well? Is the grammar in Apple's "Think Different" commercials a mistake? Big companies make grammar mistakes. Grammarly.com looked at the spelling, grammar and punctuation of six companies. They all made mistakes. The companies who made fewer mistakes made more money.

Grammarly said Coke made fewer writing mistakes than Pepsi, and sold more cola. Google made fewer mistakes than Facebook, and is richer. Finally, GM made more mistakes than Ford. Maybe good grammar won't make you buy a Coke. However, good writing is professional, and people buy things from companies they trust.