It's not like Google just lost everyone's email messages from the last 6 months.
While I agree with your overall perspective and find the Google Personalized Home's data to be of little critical value (btw - it's not the modules and gadgets developers have been building, it's just.. personalized homepages. the selection and order of widgets across a page...) - you contradict yourself in the above example.
"Shit happens", that's true. You should always be prepared. You should always backup.
But... if Google lost everyone's email messages from the last 6 months would it be fair of Google to say "well you should've backed it all up"? After all, what is Gmail if not a purely-online, searchable e-mail
archive?
You can't expect users to be prepared for their
archive to be destroyed, right? If Google wants me to manage my e-mail online, they can't expect me to download it all too, just in case.
The "stream of technical glitches" described in the article, albeit overstressed, is pointing at something that should worry us: If the software market is going towards online services, where data is centralized and 1 server down means 1,000 users down - what strategic steps do we take in order to protect our users and our data?