The Encyclopaedia of Informal Education contains 133 articles and has a "call for contributors" link. Offerings interesting alternatives from past to present to the formal educational processes."
Former Apple Computer K-12 Senior Systems Engineer and now a regular at all major Ed Tech conferences. Recommend this site to learn what is new and notable in Ed Tech.
Grab all or part of a web page or upload a file--text or image--select various sections, make comments, and share with colleagues through Twitter or Facebook. Very easy to use.
Create PowerPoint-like presentations without PowerPoint and that play from the Cloud, so an audience with differently formatted devices can view. Grap pictures quickly from Web, edit, or load PowerPoint slides. Create instant url. Compare with Slideshare.
Load a web page or an image--text page works also--and then select areas of the screen, comment box opens with your name, and insert comments to share with teammates or colleagues. Very easy to use.