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The Vietnamese are known for their entrepreneurial spirit. A growth spurt in homesharing listings shows how eagerly they have sought a share of the tourism boom. But yields are falling even as the supply of homes and hotels are continuing to increase. Crunch time is near or perhaps even here.

Cryptocurrency is only in its early days, but already it's easy to see how its mission to democratize the financial system might be co-opted. And do currency reformers really need Facebook, with all of its baggage, leading this Libra effort?

Emirates has fired the first salvo in the unbundling of business class fares. Now you can buy just the seat, with none of the other trimmings that travelers are used to with top-tier carriers. It's a pragmatic strategy, one that gives more choice to travelers. The tension will now be maintaining that great luxury brand halo and still letting the premium cabins do the marketing hard yards for the carrier.

A 10-day Nepal trek to Annapurna base camp and a four-day walk with elephants in Chiang Mai are among Airbnb's new adventure offerings. For multiday adventures to fly, it's even more critical for Airbnb to earn the trust of consumers on issues such as safety and professionalism. That doesn't mean Asian tour operators should give this a shrug. If these tours are exclusive to Airbnb, it just puts more pressure on traditional players to be unique and even more creative.

RateGain, a travel technology company backed by private equity, wants to consolidate hotel technology vendors into its fold to create an array of capabilities it can offer to hotels. In this it is not alone. It joins a party led by Shiji, Amadeus, Accel-KKR-backed Travel Tripper, Sabre, and Jonas Software.