We created this e-commerce site for myPOSprinter using an open source shopping cart called ZenCart. Not only is it developed and supported by a very active community of programmers, it's also very customizable and has a great admin area for the store's owners.
By having a blog, the myPOS team can publish articles relevant to their products, which helps drive targeted traffic to their store.
When you're selling something as serious as point of sale printers, you need to lighten the feel of the site somehow, and that's how we came up with Penny the penguin. I mean, who wouldn't buy a printer from this guy?