[Logician]

If you searched in this board I'm sure you run into my post why it is too hard to manage.

CRON job is a good idea but it is still hard to achieve because you have to keep userids same in the all boards to have a solid structure and even with a CRON job it is not easy to keep userids same. (You have to disable registrations in all boards but one.).

I always say the same thing: If this is easy to do, why would vb.com and vb.org has different registrations anyway? This should prove that this is hard to achieve or does not worth working on it even for VB devs.

It can be still possible with a clever design, but frankly I wouldnt bother working on it if I were you.

Though a member here claimed that he managed to do it, so you may want to contact him (I dont remember his name, but he posted in the the other thread) if you are determined to do it.