Funny article, straight to the point. Rackspace Cloud is shit, but for the price, you can have a VPN for cheap. $10 + bandwidth.

http://www.memfill.com/tech/under-the-hood/

Edit: suddenly been tuned into www.Linode.com ... looks way more professional, and reasonably cheap. I can see few uses for this stuff.

I have never used it (or even heard of it) but it certainly looks very interesting. I might give it a try just for kicks.