They are from a Flickr account called Shoemisadventure there is a full set on page 12 of the profile, I'll post a link but you may need to register to view.
Look at the comments.... If you want to thank someone who ISN'T on a fetish forum for their (possibly unknown to them) fetish work... DON'T BE CREEPY.
"Amazing sets" or "Great work!" or something simple. Don't tell them how you want to caress their feet or how sexy their shoes are. I've seen this happen far too often on here and Youtube (and other sites) where something cool is posted and creepy comments run people off. This is a fetish and some people don't want to be associated with a fetish at all.