Actually I'm really glad this question was raised. We've been planning to do something similar - create websites focused on specific categories where people can create and advertise their skypecasts. We have a lot of ideas for this and I'd welcome contact from someone at Skype to discuss the possibilities.
So yes, I'm also very interested in finding a way to create and "host" skypecasts from another site, while still ensuring that Skype gets whatever it is they want out of the interface. I have no interest in hosting skypecasts themselves, just links to skype.com that allow our sites to share information about all available skypecasts, while at the same time allowing us to be very selective about which skypecasts we index and promote. To get it started, we could use the
javascript for widgets to get info about skypecasts hosted by specific people, but that's a cludge and I'd rather see something more officially supported for this.
Frankly we think the current skypecasts.skype.com site (so far as a beta) was very poorly done, considering the potential of this offering. It's asking for competition, or shall I say, asking for someone to do it better while accomplishing the same goals. To me, the goals include bringing more people to Skype, monetizing it for interested parties, and overall making this more of an interactive community and part of the world "pop and business consciousness".
Ahem... just an opinion....