I guess thats the only way, although I wish there was something a little more sexy - like a checkbox I could click (the same way I can edit a post and make it sticky - one option should be  feature on portal?).
Moving a post away from its original forum is more messy than I was planning. If you have say three forums, cats, dogs, ferrets, then it is unfortunate to have to move the message away from its mini-community.
If an option like this doesnt exist, I guess this is now a feature request