An interesting point raised in the comments there is that it's hard to peg the actual value of a product that's coming at a problem in a totally new way. Skype

An interesting point raised in the comments there is that it's hard to peg the actual value of a product that's coming at a problem in a totally new way. Skype is by far the leader in its approach, and if in the future the entire world moves away from landline phone they'll be well positioned to maybe even kill Ma Bell II with their really robust VOIP technology. Plus, with $90m in annual revenue, they're making a ton more than the nearest company with a web 2.0 logo (unless you count guaranteed payoffs from the likes of Microsoft and Google).