[cqcrz]

Don’t worry.If his user_level is not enough,he can’t post on blog.

When someone register in bbPress,WordPress is not know his user role.You need change WordPress’ code or the WordPress’ plugin synchronize bbPress registrations with WordPress.

I do it in the former way.After that,the user who register in bbPress is Subscriber in WordPress.So the user can post in bbpress,but can’t post in WordPress.