Tennis is way ahead of badminton in many aspects such as prize money, camera replay system, match statistics, TV coverage etc. Talking about prize money, Wimbledon 2007 for 5 events totaled to £11,282,710 while All England 2007 amounted to only USD200,000. Prize money in Tennis, Wimbledon, for instance, keeps on increasing every year. Look at All England, for example, it has remained unchanged in the past ten years in prize money. I think that's the main reason why badminton is less popular than tennis in countries outside Asia. Instant replay system has been implemented in gymnastics and has made judging more transparent. The Hawk-Eye replay system has made its debut in tennis since last US Open. When will badminton follow suit? Match statistics in tennis is more informative and comprehensive than those in badminton. We don't see the fastest smash and the longest rally being recorded in badminton's match statistics, do we? In terms of TV coverage, tennis has it broadcasted thru TV on all the Grand Slams and other master series since round 1 till the finals. Tennis even has the tournament previews such as Legends of Wimbledon, Wimbledon Classic and so on. Badminton, on the other hand, only has it broadcasted quarterfinals onwards on major tournaments such as All England and World Championship. There are a lot more that BWF has to do in order to prevent badminton from being removed from Olympics in the future.