goo.gl is a URL shortener service just like bit.ly or t.co from Twitter. As the biggest search engine, there’s no doubt that Google has a very stable and reliable server. From their blog post, goo.gl offers stability, security, and speed. And as a bonus, you’ll get an incredibly handy QR code for your shortened URL.
But what is a QR code and what is it for? Danny Sullivan from searchengineland.com has explained it very well in his blog post: What is a QR code and why do you need one. QR is short for Quick Response — a 2D barcode used to take a piece of information from a transitory medium and put it into your cell phone. The reason they are more useful than a standard barcode is that they can store (and digitally present) much more data, including URL links, geo coordinates, and text, and they are easy to read by modern mobile phones.
QR Code example:
What is the effect for your website in Google’s eyes? Well, Google can crawl images on your site, and when it sees these QR codes, Google will likely recognize them and possibly index the content in them. For your customers or readers, some users will likely scan the QR codes with their mobile device rather than type the URL — it’s more convenient.
Besides that, you can create a business card with this QR code on it, which will store your business information including your website link. Your business partners can easily read it with their mobile phone and visit your website straight away.
See the video example below: