Internet Time Blog: elearnInternational:
"PowerPoint. How many in the audience use PowerPoint at least once a month? (Most of us.) How many learned it by attending a course? (1 person) How many learned via eLearning? (2) How many learned through trial and error and/or asking people for help? (45) This is a typical finding."
Would you get the same result if you substituted 'Powerpoint' for 'weblog'?