Paper is still winning, try the pile-file
I only print a small percentage of documents I receive, but nevertheless these printed documents play an important role. E.g.: Meeting notes and agenda's , contracts, reports, project planning schedules, etc. Paper documents are often easy to: take with you, make notes on or to study from.
After printing you have to make a decision for piling or putting effort into filing the documents. Both approaches have their pros and cons. After reading some studies about piling and filing strategies, I experimented with a hybrid system called the pile-file. I was so enthusiastic about this method that I made a YouTube film about it: http://www.youtube.com/robsprotips#p/a/u/1/H5tnm8Xj1d0