
My favorite is a site called LiveMinutes. The best thing about LiveMinutes (other than the fact that it's FREE) is that it's collaborative. You can set up and run a webinar in seconds! Once you share the link you can talk, Skype, draw on a whiteboard, and even share screens. With Live Minutes, you can upload and collaborate on documents, too.
Check it out at http://liveminutes.com/oneclick/
Another great videoconferencing app is Fring. Fring allows you to video chat, group video chat with multiple users at once, call for free and even message for FREE! .
You can check it out at http://www.fring.com/
