What is the hot trend?

http://www.google.com/trends

Google Trends is still in its LABS version. This means Google is still trying to improve what it is offering today. But everyone is free to try it out. Do try it out. 

As of date it is best way to find what the world is searching for. Only the top 100 are listed. In case you want to find the search trends of particular keywords, type it into the search box