Related, but also a generally useful addition to your browser is something call "Web of Trust (www.mywot.com)".
In Chrome (and probably other browsers) you can install it as an add-on to the browser. This will let you rate sites for trustworthiness and child-friendliness. If enough people rate the site badly, you'll get a warning (see below) when visiting the untrustworthy websites. This is a great way for us to take power from these sort of companies and try save someone else the misfortune of dealing with them.
EDIT: As you can see, even though there aren't enough ratings publicly to give the site a rating, I've protected myself from accidentally buying from this site by giving them a poor rating.