Google is finally today unveiling their PayPal killer Google Checkout. Google will now be the middleman between online businesses and yourself. The way to see if a merchant supports the Google checkout feature is by looking in the adsense ads on the side of a page and seeing a little shopping cart beside the URL. If the company support Google checkout then you just have to sign into your Google account, put in your credit card info and Google will make. process and track your transaction for you.
Google has put together a video for this new feature
Google also has a video showing how to sell with Google Checkout for those looking to sell online and have Google help through the transaction