Don't get burned by Google — how to diversify your website traffic

Many companies aim to get as much nonpaid website traffic from Google search results pages as possible. But is that putting all the eggs in one basket? Is there an ideal percentage of organic traffic you should seek from Google? What are some other traffic referral sources brands should target in an effort to diversify?CIO.com asked these questions of search engine optimization (SEO) experts (via email), and each answered with best practices and real-world advice on how to diversify website traf