Use one forum to feed another?

[wbear]

Is there any way to use one forum to feed posts to another one on a different server? I own both, and need to post the same things on both. What I'd like is to have something automated whereby I can post on one, and the other one gets populated with the same post shortly after without manually copy and pasting. It would be even better if it could be done per userid...

RSS and a bot?
Some for of data sharing?
Open to suggestions and pointers to mods that can do this, if any.