From the website:

Flagxo.com provides user-generated content to the world’s most sophisticated travelers. Here, you can rate your favourite or least-liked airports. The more you rate, the more Flagxo™ coverage of the world you will have. As the world’s busiest airports become ever more congested, more unpredictable and as airlines continue to experience delays, travelers have demanded for more efficient means of travel and have demanded better use of in-transit time, and overall travel experience.