Pittman, who discusses GoogleImage Search optimiziation.

Behavioral data shows that consumers engage deeply in Image Search tasks, with nearly double the page views per query on average as we see in the more textcentric core search experience, says Schwartz. Looking at the consumer research, our analyses show that images on a traditional search results page are a big driver of consumer satisfaction, especially for task related queries like buying products, catching up on celebrity gossip, or planning a trip.This is one reason why we are seeing images both on the main search results page and within the Image Search verticals, he adds. A study from Microsoft found that consumers can process results with images 30 faster than results with text only.