I'll do it! I use skype all the time for teaching--as Dirk said, it's revolutionary. And free! It's great for having one person doing something with their dog (shaping, for example), while the other person watches and offers feedback.
Erin, webcams are just a few bucks on amazon (the $6 ones are abundant, and they do fine--here's one: http://www.amazon.com/Megapixel-Webcam- ... gy_e_img_c
If your computer is 3 years old or less, it's almost certain that it does have a webcam hiding in there somewhere--they've gotten so cheap, all recent computers include them.
Group video skyping with more than two people is in beta for windows, and soon to be in beta for mac. That will really make things fun!