Since then, Frost and his family have been introduced first-hand to something else that most kids his age haven't: the reality of how brutal partisan politics can be in the Internet age. It started over the weekend, when a blogger calling himself Icwhatudo put up a post on the conservative website Freerepublic.com noting what he had found by scavenging around the internet: that Graeme attends a private school, lives in a remodeled house near one that had sold for $485,000 in March and is the child of parents whose wedding was announced in the New York Times. The post also...