How to get a Spotify account without an invite

Spotify is the best online music streaming service today, it's legal, fast, high quality, and its classical catalog is huge. It's available freely for residents of the UK and some other European countries, if you live outside those areas, here's how to get it.

I strongly recommend you to buy a premium after you get the free account, to support Spotify and the artists, get higher quality, and get rid of those advertisements that tell you there's a new Snoop Dogg album coming out in between your favourite Schumann's Fantasy in C's first two movements:)

Happy listening, and I will share the Spotify links to some of my favourite classical recordings as well as discoveries of exciting new contemporary music in this blog. Your suggestions, recommendations and any comment are much appreciated.
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Update: Check out the comments below for invite codes.

Update 2: New way to get invite codes. (Tested and working fine @ 2010 Feb.20th) Get a code from here and follow the steps at here if you live in a unspotified conutry.