Click it and see... It's actually the way to follow the account "sabrestlouis" on Twitter without having to sign up for Twitter. In short, if you want the end product of having a text version of the big public safety events around Saint Louis and really don't care about social media then this is where you want to be. It's bare bones but effective.
On the other hand if you hear something I don't, tweet Sabrestlouis and your message will show up in the messageboard.