How did they get my contact email? Not good.

The email:

Hi There,

I came across your website and information on the following site: http://drownedinsound.com/

I work for a website that has information all about how to license music in tv and films which I thought might be of interest to you. we're currently giving away a free ebook and video about how to get music in tv and films to everyone who signs up.

You can check it out here:
http://www.howtolicenseyourmusic.com/

Many thanks!
Ligia Roiz