If you need a simple way to keep your files backed up onto a USB stick, networked/removable drive second HDD, online server etc. etc. then I heartily recommend you try Allwaysync from:
http://allwaysync.com/
It's completely free for personal use (although, it is so good I actually bought it!!!!!) There's no spam, ads or other **** to deal with. It is regularly updated and just works, brilliantly:clap:
Bill
