It’s not always easy to keep track of new travel startups.

Three days a week we alert readers to new startups in the travel industry that have set up profiles on AngelList, the platform for early startup investing. These startups may have just launched a product or the may merely be an idea in the head of an entrepreneur, but they are worth looking at to better understand where the activity is in the travel sector.

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Photo Credit: HotelSwaps is a hotel room exchange program that allows owners of luxury hotels to exchange their unused hotel rooms with other hotel members. HotelSwaps