From the description of this Mod:
Visual Confirmation System
Author: psoTFX
Unfortunately there are people "out there" who have nothing better to do than cause other people trouble. Even worse are groups that write applications which cause problems. One very annoying (and pointless) way in which people can cause you trouble is by mass registering users. This Mod, back-ported from the forthcoming phpBB 2.2 helps eliminate or reduce this problem. It generates a random series of six alphanumeric characters as a png image. The user must then input these characters before they can register a new user. Should they fail three times in a row they will be locked out for the rest of that session.
I hope this Mod will not cause trouble by side effects. But it will surely protect us against those who only registered here to spread their (absolutely useless) links.
BTW: I have updated the memberlist and found that this forum has more users the old forum ever had
.
Regards
Volker
