The iTunes store has been very popuar ever since apple released it back in 2003. It's hard to find a person nowadays that hasn't heard about iTunes or iTunes store. I think that one of the reasons that this online service has become this popular is, that it is so simple to use. You just click and then you've downloaded your music. I remember the first time I bought a song on the iTunes store. I pressed download and thought "Is that it?". It really was extremly simple.

Now, the iTunes store is soon going to pass a huge milestone. Soon apple has sold more than 10 billion songs in their store....