Kevin Yank plays "Ready, Fire, Aim":
(via Dave Winer) Apple’s newly-released iPhoto 6 does an admirable job of making it easy for its users to publish feeds of their photos from their desktop. When Steve Jobs announced the product, he cited its use of “industry standard” RSS technology to make this posssible.
This all sounds great until you try to visit a photocasting feed in a browser other than Safari, or subscribe using a feed reader other than NetNewsWire. The site detects that you’re not using a photocast-capable client and displays an HTML page asking you to use Safari instead.
That's funny - I added that feed to BottomFeeder without any error messages. I added support for the Photo-Casting module a couple weeks ago as an update to the 4.1 release. Seems that Apple isn't turning away everyone else.