Search engine marketing, or SEO, seems to attract the most attention on Twitter when it comes to search-related terms -- but others like PPC and paid search have the potential to reach massive audiences.

What if your eyes recorded everything you see and the length of time in which you linger on a specific object? How would search marketers use that data to target ads and content? Diversify. It will become every marketer's strategy in 2013. I'm not referring to diversification of stock portfolios, but rather support for search engine marketing campaigns through cloud computing and artificial intelligence.