A brief comparison of
https://web.archive.org/web/*/http://www.panoramio.com/user/4539074*

...
http://www.panoramio.com/user/4539074?with_photo_id=112345871
http://www.panoramio.com/user/4539074?with_photo_id=112345883
http://www.panoramio.com/user/4539074?with_photo_id=112345893
http://www.panoramio.com/user/4539074?with_photo_id=112345912
http://www.panoramio.com/user/4539074?with_photo_id=112345924
Showing 1 to 50 of 3,016 entries
...
http://www.panoramio.com/user/4539074?with_photo_id=99541903
http://www.panoramio.com/user/4539074?with_photo_id=99541913
http://www.panoramio.com/user/4539074?with_photo_id=99541924
http://www.panoramio.com:80/user/4539074/tags/%E7%A9%8D%E4%B8%B9%E5%B0%BC%E9%80%A0%E6%9E%97
Showing 3,001 to 3,016 of 3,016 entries

vs. Commons

shows only 113 out of 3000 Panoramio photos made it into Commons. The rest are
still on web.archive.org. The above is a sample of just one user.
Perhaps the story is even worse for other users.