All the ones I tried. They go to flickr.com, but the account is passworded. You have to have a flickr account, and your account must be authorized to view the pix in question.
Flickr is a Yahoo property. Yahoo sucks. Best to host photos on a server that doesn't care who sees them (that's what the web is supposed to be wide open!).
Now I am ready to open my one place.
“Homers hand spanked burgers”
“western greatburger”
“locoburger”
I checked and the pictures appear viewable. You just cannot go to FLICKR and view them directly.
You are right about using another site like photobucket next time.
While I can change change the photo status to public, to allow people to view these photos on flickr, one must have a flickr/yahoo account to view them.