TelePrompter
Free teleprompter in your browser. If you're doing a quick video and need a script, this lets you edit right on the page. Position it near your camera to maintain eye contact.
authorSTREAM Online PowerPoint Presentations and Slideshow Sharing
Similar to Slideshare, this site lets you upload PowerPoint presentations for online sharing. However, this site also allows conversion to Flash while keeping all transitions and animations.
Collaboration Tools : eLearning Technology
Text version and list of tools for screen sharing, VOIP, video conferencing, web conferencing, multimedia presentations, file sharing, and more. The mind map version might be easier to understand than the text list, but having the list as a starting point for your own research is nice.