Not sure if you can trust a particular site? There are a few tools that you can try out. Scamadviser lets you know the background to a site - I used mine as an example. Scambook is a site that helps you make a complaint against a particular site, but although they said that they've got damages for people running into $18mil, it doesn't look particularly professional. I wouldn't use it myself, I'd go through a court system, but it might be useful for research. Alternatively, try Complaints Board which describes itself as "The most trusted and popular consumer complaints website" and it's very US focussed.