Guys, Do you know about Google Chatback? I have recently came across the same and its really amazing. Lear more here http://www.google.com/support/talkgadget/bin/answer.py?answer=86171 Chat back Chatback makes it easy for visitors to your blog or website to see if you are available and chat with you. They don't need to be one of your contacts or even have a Google Talk account, and you can keep your Google Talk ID private.
Yeah of course... it is... its just a linked to your Gmail account.. and I think it works with Gmail only.... it means u need to log in to ur gmail account to receive chats from Guests....