From the Shout site:
We have good news and bad news. Let's start with the bad.
Our forums have been recently targeted by spammers to the extent that the overwhelming traffic has jeopardized the entire site (as I'm sure you're all well aware). We've worked tirelessly the last few weeks to remove spam posts and block fake accounts, but their efforts have proven greater than the resources we currently have at our disposal. Because of this, we must temporarily take down the forums while we work on finishing a long-term solution. That brings us to the good news...
We have a shiny new site being developed, and it's nearly ready to launch! Say good-bye to the spam, and hello to a more user-friendly site (and forums) with some great new features. More on that to come.
We’re very excited for this, so please bear with us while we make the transition over the next few weeks. We hope to have the forums operational again as soon as possible. In the meantime, feel free to continue the conversation on our Facebook page!