Forums are great, but anybody can write inside. There is some spam since a few weeks. Could you remove them? And are emails protected when they are included in a message (there are some Wordpress plugins for that)?
Infodoc & Knowledge management
We're doing the best we can, and we are deleting spam messages when they come in. It's possible that your feed isn't updating as each one is deleted, but if you browse the most-recent forum messages you will see that they are all gone.
Perhaps adding to the registration form one of the interactive captcha alternatives out there (in addition to keeping the current reCAPTCHA challenge) would help? (I realize you wouldn't want to make registration too annoying for users, but it's just one-time, whereas seeing spam is a recurring annoyance for users, and wastes your time, too.)
(My apologies in advance, if resurrecting old threads is frowned upon.)