The Internet does not have a delete key, as that young candidate in New Hampshire found out. Any comment or image you post online may stay online forever because removing the original (say, from Twitter) does not remove any copies that other people made. There is no way for you to “take back” a remark you wish you hadn’t made, or get rid of that embarrassing selfie you took at a party. Don’t put anything online that you wouldn’t want your mom or a prospective employer to see.
