Using del.icio.us as a Writing Summarization Tool: Jeremy Zawodny:
It occurs to me that with a sufficient number of people bookmarking an article and selecting a short passage from it, I have a useful way to figure out what statement(s) most resonated with those readers (and possibly a much larger audience). It’s almost like a human powered version of Microsoft Word’s document summarization feature. (Via Daring Fireball.)
Training material for automatically-trained document summarizers?