Hi again,
I've noticed these (possible) bugs:
3/45 Hackers' camp 2f: Thunderbolt page returns 500 upon "login"; subsequent logins show an error message "your cookie is corrupted"
3/61 Hackers' camp 2e: the php script outputs a warning "failed to open stream" on any input.
4/23 PHP Pwned : php script in the go=true page outputs the 2-char string "%s" on any input.
2/78 Hackers' camp 2f: Rob page always returns the original page (and no "wrong" message ) upon post, I don't know if this is intentional or a bug.
An regarding 3/44 (vote rigging) - I did manage to get a 500 for some inputs.
Thanks!