This excerpt taken from the LONG 20-F filed Jun 30, 2008.
Our business depends on the technology infrastructure and service of third parties.
We rely on third-party computer systems and other service providers, including the computerized reservation systems of hotels and airlines, to make reservations and confirmations, to issue air tickets and to make deliveries. Third parties provide, for instance, our back-up data center, telecommunications access lines, significant computer systems and software licensing, support and maintenance service and air ticket delivery. Any interruption in these or other third-party services or deterioration in their performance could impair the quality of our service. Furthermore, if our arrangements with any of these third parties are terminated, we may not find an alternate source of support on a timely basis or on satisfactory terms.