Ever-increasing free online storage

Once upon a time (about 3 years ago), when I was using windows, I had a laptop (the one I broke) with only 10GB of hard disk. It was a Fujitsu S-5582 which later I upgraded to 20GB, wow! I had a 60GB external laptop drive (which I also broke shortly after I bought the laptop), so that leaves me with a big storage dilemma - speaking of irony. It was running on XP and Puppy Linux (live, i.e. run from CD and not installed locally) and understandably the hard disk was almost full before I started using it. So what did I do with my files and extra applications I need to use?