Although tappedin was designed primarily for teachers there’s some worthwhile stuff for anyone who facillitates groups and even for those of us whose principal focus is on employment and career development. For example, on the 18th of December I see a session about ePortfolios.
Membership is free. Note the RSS feed available at the bottom of each calendar page.
PS : Very friendly and helpful. It's late Sunday afternoon and somebody calling themself “BjB” is there to guide me around the site. Thank you!