What's a shoutbox?
Shoutbox a.k.a tagboard/chatbox, is an easy to use messaging system that allows you to interact with others instantly.
A shoutbox can be placed on your blog or website. Your visitors can then easily post comments in it. They can also use the shoutbox to chat with you and other visitors at the same time.
ShoutMix chat widget
you can creat shout box on http://www.shoutmix.com > clikc create your shout box now > kamu tinggal ikuti langkah selanjutnya...get a code and copy paste aja to your blog.