(solved) JSON call for Twitter and Flickr API

I’m working on an application that pulls feeds from Twitter, Flickr and Youtube. The Youtube feed works properly, but Twitter and Flickr do not. When I’ve tried the same code on someone else’s domain (who uses a different host) it all works fine. After some research, I’ve found that it may be a server issue.

Link to the application

Any ideas on what the problem might be?

Thanks for your help

The title says solved - what was the solution? I can’t find any reference to JSONP in the wiki.