The result is a mega thread of 25 pages, each containing hundreds of thumbnails of pictures that have been posted in the contributions forum. That's around 12000 images !
All the pages directory can be seen here. Sorted by time, so the more recent pages are in the 20-30:
Clicking on a thumbnail will lead to the thread it has been posted in.
The Python script used to produce those images is also in the above directory. I had to adapt it to parse phpbb forums, ignore unaccessible/deleted threads, ignore avatars/signatures/smileys, etc.. I also made it multi-threaded (20 threads yey!) so that it processes faster.