Similar to YouTube but education oriented. I found some interesting videos on here but I have found the equivalent YouTube videos to have better production values.
It's YoutTube for Teachers!!! TeacherTube is a service that allows users, mostly educators to share educational resources (documents, images, audio & video files) for free. The sites has resources for classroom use, professional development, and even have some posted by students.
ZCubes seamlessly integrates browsing, searching, editing, painting, freehand drawing, cursive hand-writing, audio-video media management, publishing, and much more into a pure Browser Based Platform.
September 2008 : THE Journal
This article describes some great out-of-the box thinking towards the power of webconferencing through Skype's free videoconferencing.
Flickr is a website for storing and displaying digital imagery though it is mostly geared to photography. You can create sets of your own imagery or collect other photographer's photos in galleries. Has many other uses as well. Too numerous to list here.
Dropbox is an easy way to share files and to back them up. You can access your docs on any computer even without the software installed. You can send an invite to share access to specific folders or files to allow collaboration. It works on multiple platforms including iPad/Pod/Phone, PC, MAC, Android, Linux, and Blackberry
Mainly for businesses, but schools can create virtual classrooms, maintain calendars, assignment deadlines, host picture shows, video events and encourage parents participation, etc.
I found yodio.com for podcasting. This is a unique site in that you "call in" to record your podcasts and then can go back to add pictures. Not the best for making videos.
WordPress is a user friendly website that allows even a novice blogger to blog like a champion. There is a very nice tutorial that will teach a user everything they need to know. WordPress allows users to include maps, pictures, videos, posts, discussions, polls, and much more!