Screencast-O-Matic is a great site for creating screencasts for all platforms. All a user has to do is click start recording and then adjust the size of their recording window. The finished product can be downloaded, uploaded to YouTube or shared on SOM.
Konivo is a new site that is great for making slideshows. What it actually does is allow you to upload a powerpoint then record a video of you talking about that slide. It then syncs it all together to share w/ others. This is a great site for making a Pecha Kucha presentation.
Live Minutes is a new service offering free hosting for webinars. It takes less than thirty seconds to set-up a webinar on Live Minutes. To get started just click "start sharing" and a meeting space is created for you. That meeting space is assigned a URL that you can share with the people you want to join you.
Live Minutes offers a good selection of tools that you can utilize to share ideas with others. You can talk to each other using either the Live Minutes audio or by connecting through Skype. Live Minutes offers a collaborative whiteboard for drawing. Uploading images and documents for others to see and comment on is also an option. And in the future Live Minutes will allow you to share videos during your webinar.
Applications for Education
Live Minutes could be a great way to quickly host a live online tutoring session with students. The option for drawing free-hand on the whiteboard could be very handy for illustrating concepts that are difficult to type quickly on a keyboard or that lose meaning when someone is just explaining rather than showing.