Send Different Auto-Replys Based On Keywords With Gmail Canned Responses

Google has launched a service for those of you sick of typing out the same reply every time someone emails you with a common question
Now you can compose your reply once and save the message text with the “Canned responses” button. Later, you can open that same message and send it again and again.
Turn on Canned Responses in Labs, and you can set a filter to grab one of your saved responses, and send an automated response back to someone based on keywords placed within the sender’s email. Very intuitive.