[Jasber]

Sites like Tripeedo are not geared towards loyal customers-they're geared towards bargain shoppers.

OTA is gaining real traction. By my count about 1/3rd of the companies listed on Tripeedo are members of OTA, while many more unofficially support some derivative of it. Most of these companies don't have open API's--they are very private and require NDA's and partnership agreements.

There are systems in place to handle use-cases like this. API's are in place for travel agents to search available rates and creating bookings. This is essentially the same concept.

Kayak is justifiably being blocked because they're scraping sites. If they had partnership agreements in place this wouldn't happen.