Just discovered this great tool to render equirectangular photos much like Quicktime VR's. I had been wondering if Flickr's new ability to post photos might also enable the possibility to post QTVR's directly within the site. That doesn't seem to be the case, but SPi-V seems like a great substitute. I'm quite impressed!
Have a look at the interactive viewer here.
(Requires Adobe Shockwave)
I can't believe this was already three years ago!