Employers' selection practices sometimes involve reviewing applicants' profile on social networking websites (SNWs) and invading applicants' privacy (e.g., asking for their passwords). Applicants can be eliminated because of faux pas (i.e., inappropriate content) they post online. Yet, little research has examined factors related to faux pas postings. The present study examines employers' use of SNWs in selection, participants' internet and SNWs use, personality, and SNWs self‐promotion as predictors of the likelihood of faux pas postings. Results show lower likelihood of faux pas postings when participants are informed that a high proportion of employers use SNWs in selection, but mainly when it includes invasion of applicants' privacy. Moreover, participants' age, privacy settings, extraversion, and SNWs self‐promotion are related to faux pas.