Most of the techie people know this but many don't . This post is for them .
Have you ever wondered , why google offered you the functionality to show the song that you are playing on your Gtalk . Do they really want you to show your friends what songs you hear . Naaahhh..... The aim is not to tell your friends , the aim is to tell google what songs you hear . Now if you wonder why Google would be interested in knowing that you hear Sutta Or Bidi Jalaile Or Linkin Park , think again . They collect data and fill up their database . And also they calculate which is the song that is being played in most computers . Check the below Music Top Charts which i got from Google Music Trends

Rank	Title	Artist	Change
1	Say It Right	Nelly Furtado	--
2	In The End	Linkin Park	--
3	Don't Matter	AKON	New!
4	You're Beautiful	James Blunt	-1
5	Boulevard Of Broken Dreams	Green Day	+2