I was thinking as I just subscribed to a thread, subscribe is GET.
So if you have a thread which gets hundreds of replies, I could do
code:
[img]http://shoutbox.menthix.net/usercp2.php?action=subscribe&tid=<tid>[/img]
and by the time someone checked their email, they could have hundreds of crap emails there.
Also wdz, why is the [code] tag so weird