One of our gang recently moved from Michigan to Germany and we've been using Skype to keep him in our campaign. It's worked very well and we're able to play for hours. We suffer from occasional dropped connections but it's easy enough to reconnect. Using the camera, he can see the battlemap. Occasionally we have to hold stuff up to the camera for him to see. As far as dice rolling goes, we trust him. After each successful session I feel a sense of amazement that technology lets us play with him so easily and cheaply from such a long distance.
