i dont see anything wrong about it. its actually good for dd board since that person is helping them to get more members in expense of his own resources. and its effective if you would ask me and prefer that way rather than spamming the other forums by blatantly advertising on posts and signatures.

by the way when you say force someone, it means that someone has no other choice but to do it. which is not in that case because anyone can refuse to do it if he/she wants to.

br, lorelei