I hadn't seen any discussions about Bobsled, so I thought this might be useful to some of you. I just tried out the Bobsled app for ipod touch and its pretty great. I bought my ipod touch (in Sept 2010) instead of an iphone because I don't have much need for talking on a cell phone (or a $1,000 a year voice/data plan). But in those rare instances when I do need to make a call when I'm away from home or work, Bobsled is a pretty nice solution. It provides free outbound calling to any landline or mobile phone in the US. Its also integrated with Facebook if you're into that sort of thing.