The New York Post just published a well-written overview of information overload titled Going under: Information overload is drowning office workers. Reporter Chris Erikson included two of my favorite statistics—that knowledge workers lose up to 28 percent of their time to overload of various types, at a cost of just under US $1 trillion per year. He also rounded up some tips to cut the glut.
Two other worthwhile collections of pointers:
Email Etiquette for the Super-Busy by Jocelyn Glei at the99percent.com
10 Ways to Multitask Better by Rick Newman, chief business correspondent at US News