Hi Chuck
This doesn't answer your precise question, but you can put links to any online photo in a post - almost all of the pictures I post are merely links to pictures in other people's websites. Sometimes they will break if a site is reorganised or shut down, but otherwise it's the easiest way.
When I do use a hosting site, I generally use
http://imgur.com/ or
http://imageshack.us Of course, it may be that our admins are happy to allow photo uploads in posts - Mike does now allow this on
http://forum.6502.org/ but for many years he did not.
Cheers
Ed