I have written about the importance of system back-ups many times before. I talk about it specifically in System Back-ups.
Today, in my news aggregater, Macworld reported on BackBlaze. BackBlaze is a $5/month online backup server and service for Macs and PCs, and has no limit to how much you can back up.
Also, The Unofficial Apple Weblog has a review with shiny pictures.
I've not tried it yet, but I intend to. The questions that have come to my mind are all the obvious ones. They answer some on their web page. For many of you, the important answer is "It is better than the backup scheme you currently have," knowing that many of you (twice I wanted to write "most") don't backup at all.
If you try it, let me know what you think. I will do the same.