Since we are not officially selling build monitor sirens yet you may pre-order sirens from http://www.sirenofshame.com/PreOrder. The fun part is if you provide a twitter account upon pre-order we will have @sirenofshame automatically follow you and mention you. We also list everyone that's pre-ordered as "favorite people" on the left side (unless you check the anonymous check-box). Hopefully we can create a community of people around our fun product.
We also published our forums today. It's free to create an account. The phpbb site isn't branded yet, but if you have any issues or questions feel free to post at: http://www.sirenofshame.com/forums/index.php.