Points.com and PriorityRewards Club
Points.com | Get More Rewards, Faster. The wonderful free Internet is back. This is a site that lets you track all your various mileage programs and then trade between them. It is sort of free, it is $20/year to exchange all year, so that means, you can aggregate all those miles that are scattered across all your airlines.
A similar free thing is “Priority Rewards”:http://priorityrewards.com club, they let you redeem miles across any hotel.