I make use of the chat-room facilities provided on Stack Exchange, in particular I visit the main one specifically for the Raspberry Pi, i.e. "The Bakery". It is possible to be notified when someone addresses or targets a message to someone who has been there (recently I believe) - I would like to automate this to make an electronic "ear-burner" as it were to flash an LED (well drive the Pin up and down for say 1 second high every 20 seconds for an hour after a mention of my identity) on a free GPIO pin!
At present I am using the Iceweasel browser on my Debian desktop and there is a version for the Raspbian RPi that I have installed - I am using FireFox sync and I have just done that for the RPi. Besides that what would I need to put onto a Pi so that it could listen out for messages/mentions that are targeted to me and alert me when that happens? I have Greasemonkey but I do not think it can communicate beyond the browser (cannot read/write a file or pipe that an interface to the hardware would need).
Whilst my particular idea is for targeting the RPi SE Chat page - the general concept of controlling the local hardware from the confines of a browser has a wider application in the RPi environment I am sure.