Disallow Users To Post in Forum Until Posted in Specific Forum?

[Spike Saunders]

Is this possible? I had thought so, with a simple task and all, but seem to be on the wrong end.

What I did was create a new member group called 'Members', and made the permissions set so all the forums were unpostable except the Introduction forum. After a post is made in that forum, the Members group would be automatically upgraded/promoted to the regular Registered Users group, which has access as normal.

Is this not truly possible, or is there another method?

One big reason I am looking to do this is due to the mass-attack of forum bots in the past few weeks (not just my stie, but around the web itself) and would like to force bots that register to post in one specific place rather than all over the board... ALSO force new users to introduce themselves to the community before posting elsewhere and getting the standard reply of 'who the f*ck are you?' and such.

Just a question.
Thanks.