Thousands of Americans are preparing for the unofficial start to summer, and with it, the busy summer travel season. AAA estimates that 41.5 million people will travel over Memorial Day weekend alone, an increase of nearly 5 percent over last year and the most in more than a decade. If your summer travel plans include an overnight stay, there’s a good chance you booked a hotel room online. In fact, hotel bookings make up 15 percent of all U.S. ecommerce, with 500 online bookings happening every minute.

Unfortunately, all too often unsuspecting consumers who are booking travel online fall prey to shady deals, scams, and misleading marketing tactics—resulting in extra fees, lost reservations and ruined vacations. We recently polled consumers and found that 23 percent of travelers report being misled by third-party traveler re-sellers on the phone or online. That translates into 28.5 million hotel stays and $5.2 billion in fraudulent and misleading hotel booking transactions last year alone.