I've been using BackBlaze. I find it both cost effective and time saving. Here's why: Price: It costs only $3.96 a month if you pay for two years up front. ($4

I've been using BackBlaze. I find it both cost effective and time saving. Here's why: Price: It costs only $3.96 a month if you pay for two years up front. ($4.17 a month if you pay for only 1 year up front.) They offer unlimited storage of everything on internal and external HDDs. 30 days of file revisions too. I think I have close to 1TB of data backed up with their service. (Using Duplicity w/ S3 would cost me $90 a MONTH in comparison.) Time: I've always been using Windows File History to backup onto a external USB HDD, but I wanted an off-site backup. I initially started backing up to S3 myself and even dabbled with Glacier. However, maintaining this setup proved to be quite messy. Dealing with encryption and decryption was painful as well. Having a simple foolproof interface was worth it.