WSJ - Oct 1 - Match.com asked ~5K singles what criteria they used most in assessing dates. Beyond personal hygiene, it was grammar. 88% of women and 75% of men care about grammar most, putting it ahead of a person’s confidence and teeth. The Grade, a new dating app, checks messages for typos and grammar errors and assigns each user a letter grade from A+ to F. One reason people judge grammar and spelling snafus so harshly is that they can reflect the level of effort, or lack thereof, that folks put into their bio. Certain types of typos are also associated with fraud.