HP has always prided itself as a socially responsible company with a high regard for corporate sustainability. They've launched a new initiative called Power To Change which essentially is a call to everyone to perform the simple act of turning off our computers when we don't use them in the concerted effort to help reduce energy waste, curb carbon emissions and save money. Part of the initiative is this cool little widget that you can download onto your desktop.
The widget is there as a reminder but more importantly, to measure how much energy you save by actually turning it off. It's an interesting social media angle where each individual's widget gets a daily sync with the HP database and it shows how much savings are made by all participating users.