It seems that the Skype proprietary protocol has been cracked throug reverse engineering.

Here Charlie Paglee’s blog, where he resumes how he and his company (the chinese Vozin Comunications) realized that they effectively managed to ‘crack’ the protocol.

As somebody pointed out, even if the protocol is encrypted, is not patented, therefore is not illegal to ‘reverse engineer’ it.

Will this influence Skype business model?