Wasn't Linus Torvaldes a teenager when he programmed Linux? Why are multi-national corporations, governments etc. all obsessed with using 'kernels' from other operating systems.
Go back to the drawing board and redo everything is the way to advance, not regurgitating the same old tripe every decade.
Google is trying to compete with Microsoft, they're two very seperate companies and Google is just spreading itself too thinly. Very soon Alta Vista and Yahoo are going to give it a nasty dose of reality.
I don't like this business of keys, registration etc. either... soon they'll be asking us to scan our eyes, supply DNA and maybe even a GPS location. PayPal already calls you up to confirm who you are, what's stopping this going down a darker path?
Soon, databases will be able to put a name to an IP address without having to obtain court orders for the ISP to release your data!