There's been some disturbance in the Python ecosphere because Blip.tv has removed a lot of Python content - for a long time, Next Day Video used Blip as their preferred hosting service (I don't know whether they still do or not, but after this I should hope not) and PyCon video was hosted there by default. According to their announcement
After many years of being an open platform, we’re now taking our mission to bring the best original web series to our audience more seriously.
So I wrote to them to ask if it would be possible to get copies of the content they had made unavailable:
I understand that many Python-related videos are no longer available on your service.
This is to ask whether you can make the original media available to us for re-hosting, since there is definite demand for some of the video content you have removed.
Their reply was unequivocal:
Unfortunately this content is no longer available on Blip and we are not able to provide it to you. The original content owner may re-upload their source files to another hosting provider as an alternative.
So if you were thinking about using Blip's services, you might want to think again. They have just deleted all this stuff, as far as I can see without giving much notice to the people who posted it in the first place. They have made no friends in the Python world as a result, and I can only imagine who else they have pissed off with their apparently heavy-handed actions.
