Hmm.. I read "It's a phone. It's a computer." at that link. I see nothing about being a "smartphone". This has drifted off topic. Yes, you can do whatever you want with an iPhone and Droid after you break your warranty agreement and root/jail-break it. Custom ROMs, yada, yada... On the N900, you can do it naively, without using third party software to break into or replace the OS of your device.
Ah, I see PradaBrada is back! If you were able to get yoursef a new toy, why don't you head off to the Google / Android forums?