Movingscam.com:

If you are thinking about moving in the foreseeable future, I urge you to bookmark Movingscam.com. Founded by the victim of a moving scam, the site warns readers away from known scammers, provides tips regarding how to find a reliable mover, has a list of reliable movers based on reader feedback, and has a discussion forum where you can ask questions. I've moved several times in the last few years (thanks to visits at Michigan and Brooklyn, to which I brought my family) and found the site invaluable, both with regard to advice provided, and also to correct the power imbalance when a representative of an otherwise reputable mover jacked up the price at the last minute (no reputable mover wants a bad review on movingscam, and the price went back to what was promised).