Agreed, I have backups on my laptop and external hard drive, so if one of my drives fail I'm covered. If both fail, well that's why I've got the really important stuff backed up on my FTP server.
Every few months I email my hotmail account with all my writing. As text is ridiculously compressible I haven't even hit the 10MB attachment limit. I also have all my more current documents saved in Google Docs, mostly for the portability but also for the very slim chance of an "Oh my god I broke my laptop, holy crap my house burnt down, and dammit I forgot how to connect to my FTP server and for the love of god I forgot the password to my hotmail account."