Piazza.com offers students and professors a smart-looking , easy-to-use discussion forum for question & answer communication in university and college courses. It is free to use and free of advertising. and is proving popular enough to use at some of the technical schools in the USA (e.g. Stanford, Berkeley, Georgia Tech) and Canada (e.g. University of Waterloo, University of British Columbia, University of Toronto). Continue reading Piazza – web-based discussion forums for university courses — Paul Kates