I thought phpBB already had something like this built in?

On the subject, though, it's a stupid idea, trolls would catch on to it real fast, probably within the first two accounts, and bots only occur once in a blue moon.

It'd actually be more disadvantageous to new users, and might turn some people away from the forum.

Besides, no moderator wants to spend his time reviewing "LOLOL MAH NAME IS SONICRULZ9001 AND SUPERSMASHFLASH IS AWESOME " posts...

I think the system we currently have in place is adequate. They spam, we ban.

I do not intend to go look through the post approval system and the reports every time I log in....