April 15, 2013 9:38 am Redeeming Flight Points A survey by research firm Colloquy found $16 billion worth of reward points and miles went unredeemed in 2011 alone. Travelers seem unaware of how much they have accumulated over the years and forget to spend them. US & World Videos 1:15 Anna Nicole Smith's look-alike daughter Dannielynn Birkhead attends 2024 Kentucky Derby 3:27 Dua Lipa claps back at viral ‘give us nothing' meme during ‘SNL' hosting debut 3:27 Here's one of the luxurious suites your favorite A-list celebs are getting ready in for the Met Gala 1:41 ‘The Mummy' turns 25: Remembering the Brendan Fraser classic 0:58 Teen and man killed in shooting at Hartford apartment building