I used to have pictures on flickr when I had an account there but never put tags on them. It is optional to tag them - at least it was about a year ago. I don't like flickr, it is too much of a social networking site for me and it takes ages to get a links on it to open even though I have an 8 meg broadband.
Anyway, where is the Surrealism thread on flickr? I haven't found it.