"Less is more," or "brevity is the soul of wit," might as well be the motto of Google's new URL shortcut with the tiny domain name go.co. It's not a public URL shortener but used only to link to "official Google products and services." Google just wrote about the new domain on their blog:
The shorter a URL, the easier it is to share and remember. The downside is, you often can’t tell what website you’re going to be redirected to. We’ll only use g.co to send you to webpages that are owned by Google, and only we can create g.co shortcuts. That means you can visit a g.co shortcut confident you will always end up at a page for a Google product or service.