How to prevent spammer in forum kunena?

Many joomla programmers use forum kunena. After a time, there are many articles are posted automatically by spammers. There is some way to stop it.

you can use component: Spam killer for kunena. But many people say it doesn't work. So it is not a good way.

After a time thinking, I find that these spammer relate to com_users to register user automatic, posting article automatic by some code inside forum kunena. If we stop spammer registration, we can stop these annoyed things.How can we do this? JWUSER is a good solutions.

1. Fist, download jwuser. Choose the suitable version for yourjoomla 1.5 ,Joomla 1.6 ,Joomla 1.7 website.

2. Then, config your website at global configuration: not allow register for new user.

3. Set the registration page of your website to registration page of jwuser.

Everything run as before, you also have more option from jwuser. No spammer can post article in kunena forum.