Discogs is a site I discovered 2007, while searching for a CD I wanted.
It's an incredible site, and the though behind it is very brilliant.
It's a database with information about artists, CD's and labels.
It's a mapping of all artists in the world, and their releases.
It's not complete, and will never be, because new music is continously released.
But there is so much information there that you wont believe it until you see it.
It's regular people with interest for music, like me, that adds all the info.
I have added some releases myself, but only a few, since I buy most from there, meaning it's already submitted.
An excellent site if you want to know what a certain arist has released.
You can also buy all the CD's in the database.
You don't buy from the site though, you buy through it, from other people. I have bought a lot there.
And it helps me knowing when my favourite artists releases something new.
My profil at discogs, with all my CD's and others.