PictoGrab 1.1 supports photocasting
So you want to take part of the photocasting fun but you don't have a copy of iPhoto installed? Then check out RadicalBreeze's PictoGrab. It lets you subscribe to photocasts published with iPhoto '06. Just identify the feed you're interested in, designate a folder to hold the contained images and you're all set. You can also use PictoGrab to quickly grab all of the photos from a website, like a photoblog.
PictoGrab costs $14.95 and requires Mac OS 10.4 or later. A free demo is available.