I like the guy, but he's been infected with a dangerous idea. In An Open Letter to Comcast and Every cable/Telco on P2P he says

"BLOCK P2P TRAFFIC , PLEASE"

Mark Cuban calls Skypers "freeloaders." Says ISPs should charge a premium to allow supernodes to run (Skype supernodes being the backbone of Skype's p2p network).

Janko Roettgers holds his nose over Cuban's change of heart, citing prior positive blog posts and investments in p2p technology.

Skype expert Andrew Hansen commented:

www.skype.com is P2P - it saves me 10's of thousands of dollars a year and I run my entire business on it, I will gladly pay a little more to have more bandwidth. P2P isn't the problem, Internet providers who fail to see their role as pipe providers are the problem. I have a 10MB home office connection (outside of Toronto) it never hiccups, and in comparison to friends in Japan, Denmark etc., the speed I get is prehistoric. When greedy pipe providers stop worrying about (and trying to) control the syntax of the messages going over the network and concern themselves more with providing a better network, they will realize incredible profits. He who provides the best connection wins.

The joy of p2p is people helping each other.

Cuban thinks this is bad.

Mark, where does your notion come from?

Mark, why are you calling me a freeloader?