Grammar is offering itself up to anyone who's willing in this open letter that, ironically, makes Grammar sound a little bad. But hey, if it takes some innuendo to get people to learn the difference between "you're" and "your," we say go right ahead. Just remember, world: Using Grammar is not a one-time thing. This card is available on Etsy, if you know anyone who's been resisting Grammar's advances. (Via Pleated-Jeans)