I use Skype both professionally and personally. My youngest son is attending school in Iowa and I have moved to Florida. We have a weekly Skype date to catch up. It's really nice to be able to see him when we visit. Professionally I use it to Skype remote workers into meetings so all can participate.
I enjoy Skype too. It is great for online work, too, as you mentioned. I wish there could be a way to better watch ethics and copyright when everyone uses all areas of technology, but that may present a bit of a block on Intellectual Freedom too. So, now I wonder where will the next new technology take us?