Here's a new feature to look at flickr Groups:
http://dev.nitens.org/flickr/group_t...t=23139075@N00
Click on the link and you will see al the flickr groups being tracked (including pretty well all the major ones).
High Heel Street Fashions group is highlighted in the crowd. It's one of the larger groups with 1120 members and 3700 photos. You can see many photos without registering on flickr but to see them all you need to join flickr and then join the group. This is due to the way people categorise their photos and set the permissions on them.