If you search for Photosynth on Twitter, it has been absolute chaos all morning and through the afternoon.
Trends I've seen:
:: Lots of people excited and happy, linking to news stories. ツ
:: Windows Phone fans frustrated that the app is only on iOS so far
:: People wishing that they could browse fellow users' panos via the app (I was surprised that this would be absent. Is this really the case?)
:: Some criticism from Robert Scoble, over the lack of 'share to Twitter', stability, etc.
:: Occipital replying to him, saying that competition is good
:: Some folks blindly rejecting the app saying they already use something else
:: Some folks complaining that Silverlight is required to view panos on the site
:: Some jeering news stories about Photosynth now being cool enough for iOS, in reply to the message shown to Mac users during the first seven months of Photosynth.net's life, despite the move to the Silverlight viewer, especially for Mac users over two years ago.