Just a heads-up to the Photosynth team: there is a report on Quora (yet another social network to monitor!.. hurrah?) quite similar to this, only it appears that the synth|pano titles are linking to the .json file for each synth, rather than the view.aspx page for it.
Also, the title of the feed ("%user%'s Most Recent Photosynths") continues to point to the Photosynth homepage, rather than the user's profile page, which I believe is an oversight. (Originally reported here: http://photosynth.net/discussion.aspx?cat=6352296a-76e5-4f2a-96eb-d10fdab0de1f&dis=c36e56bc-7285-46df-ad28-4b6808709b88 )