I've been using CrashPlan for a couple years and am very happy with it. For about $50/year I have >100GB backup up to their cloud system. Whatever OS you have (Win/Mac/Linux) it continually runs in the background and automatically updates every 15min, you don't have to think about anything. You can access every version of a file you've ever backup up. Highly recommended.
I can't have sex with your personality, and I can't put my penis in your college degree, and I can't shove my fist in your childhood dreams, so why are you sharing all this information with me?