Chatrooms with a 24 Life Time (cobbic.com)

I wanted to build a open to all chat room place where people can just hope in and start using. So I build this platform . and too keep it fresh I added the time factor, Each live room ( thread ) starts with a 24 hours as default time. When user buzz it , it adds 5 mins to the timer. so when users keep buzzing the thread don't die. And when the time is over the thread die forever.