Many Times it happens that you are busy with some work or is not sitting in front of your computer but your google talk or gtalk is open. Gtalk autoreply is a small tool which is quite useful in such scenario. It can be used to set auto reply on your gtalk or google talk. When you set auto reply using Gtalk Autoreply and anyone pings you the tool will send him the auto reply message. It does not voluntarily send this message to every friend but just replies to those who ping you.
You just need to download the software and install it. Then run the utility from the desktop icon and then enter your gtalk account username and password and fill the message you want to be send to your friends when they ping you. Now click save and enable autoreply and it will get enabled.