Sharon777 on Twitter pointed out a possible problem with either the Camino browser or Google Reader. If you use Camino to browse someone's Google Reader Shared Items page (such as mine or Whole Wheat Radio's), an web feed notification icon doesn't appear in the address bar:
However if you click
View Page Source in the
View menu, you can clearly see the link to the web feed:
I can't really think why it shouldn't find it. Perhaps Camino has trouble with Atom feeds as opposed to RSS. When I have some more time I'll see if I can reproduce the error somehow.