The TourCMS Marketplace Perl Sample Code by TourCMS demonstrates how API interaction can assist to implement tour features into travel services. In particular, the sample can call the Search API as agent or operator to find tours by keyword, giving XML responses.
There is no doubt that there is a lot of money to be made in travel. Heck, travel (globally) accounts for over 12% of the World's GDP. That is some serious coin. You have an incredible idea for a web application that is going to make travellers love you and make you rich at the same time. The question is... who should I connect with and why? Here is a quick run down on the pros and cons of connecting with the likely, and not so likely, hotel distribution partners.