Google's days of ultra-robust sales growth appear to be coming to an end if you buy into eMarketer's forecast the company's sales will climb by less than 30% in 2007 to $11.8-billion from $9.3-billion this year. What is particuarly interesting about eMarketer's thesis is senior analyst David Hallerman's asseration Google will need to become more than just a one-trick pony. "Google will increasingly require alternative channels to maintain its spectacular revenue growth," he said, citing areas such as local search, video marketing and classified ads. A big question facing Google is whether it's willing to make a big acquisition to establish a major foothold in a market with a different revenue stream. Does Google, for example, take a run at Walt Disney or eBay? eMarketer also has a story on the search marketing business.