Any site that allows anyone to post listings is subject to these scammers. I've had listings of mine cloned and posted for rent on Craigslist. Fortunately someone drove to the house and called me from my sign rather than the scammer. We flagged the listing immediately and got it removed.
Your best bet for safety is to deal with a local property management company or agent who works with rentals. Nothing may be 100% safe, but your odds are much better this way.