google did what?

on the 24h of april i wake up and check my mail and i have emails from several people saying my blog is down. it took two weeks and i never got an explanation why but they gave it back to me. usually something like this would really piss me off but i just spent a week at a monastery practicing meditation so i don't get angry anymore. patience my friends and i will get caught up on my postings.  how do you back up a blog in case this happens again?