What is The International Pop Singles Survey?

"The International Pop Singles Survey",is a music pop chart,also known as the International Hot 100.It is a ranking of the most popular songs across all genres of music in the world.It covers the United States,Canada,all of North America,United Kingdom,Japan,Europe,Asia,Africa,Australia,New Zealand,and South America.It's rankings are based on radio airplay,sales,and paid downloads from around the world.While sometimes it is difficult to track all of this information on a weekly global scale,the chart is one of the most accurate music charts in existence today.the internationally syndicated weekly radio countdown program,"Rockomania Top 40" uses this chart by counting down songs #40 to #1.