An interesting article over on wired analyses how the article author had his digital life wiped out.
It is partly his own fault, he didn't back up his irreplaceable family photos and correspondance to something that was not connected to the internet (a CD or DVD), however the article reveals some glaring errors in the systems used by companies like Google, Apple and Amazon in the way the secure your data from theft, erasure or abuse.
It is a long(ish) read, if you skip to the end you will see some of his recommendations, not having a backup email set that uses the same or a similar name to your main one is an obvious one. So in other words don't back up your main email address firstname.lastname@example.org with email@example.com.
If you own a web domain, try not to use the address that your main accounts use as a residence address for your whois registry entry.
If you use an apple computer and make use of 'iCloud' do not set up 'Back to my Mac'.
And if you use Google services set up two-factor authentication for your account.
An interesting read.