8) There's no tool that "provides as many actionable insights into your website as Google Analytics," according to Guy Martin Smalley, founder of Bowery Creative. "It can be used to monitor referral traffic, see geographically where your visitors are coming from, and monitor exactly what they're doing when they get to your site."
For example, if you spot a surge in traffic, Google Analytics can help you see exactly where it's coming from. The traffic could be coming from a positive article about your company -- or from a terrible review. Either way, you should be aware of the source.
Sign up for Computerworld eNewsletters.