I work at a customer service counter where at least 10 lost smartphones get turned in everyday, and most are not password protected. Sex is best kept in the bedroom or in some sort of private place. Putting it on a smartphone makes it a possible public statement. And yes, I have heard my share of stories from girls and guys who accidentally sexted the wrong person.....one woman actually sexted her mom. Accidents can occur!!! ANYTHING that you put on a smartphone, on twitter and on facebook is something you must feel comfortable sharing with almost everyone.