Originally posted by Yankees25:
It's not big here (yet), but Skype is signing up something like a million new customers a month over in Europe. Can't beat the price (free).

http://www.skype.com/



I tried Skype with a friend who was in Europe last winter. It's good for a free service, but there's a few second time delay between conversation, enough to make it awkward to try and talk to someone. Perhaps they've fixed that limitation in the past year, I don't know, but it was enough for me to stop bothering with it.