Spamming on boards available to guests

[Osippi]

The recent trend of spamming our emergency health boards has become a problem. I have two projects due in school so I'm not able to get on as much to moderate. Almost every time I get on to check up on things I find a spam post by a guest. The single only reason the emergency board is open to the public is because not everyone is able to sign up on websites because of rules at home and other reasons. I really don't want to have to close the emergency board to the public because of a couple bad apples. Spamming is clogging the boards up and it needs to stop. If this happens again I will be forced to consider closing the board to the public so you must sign up in order to post. Please keep in mind that's one of the last things I want to do, but I can't afford people getting on my site and spamming the only board open to the public.

Thanks for your help & patience
- Lakota