As Web Search Goes Mobile, Competitors Chip at Google’s Lead - NYTimes.com

Excerpt from a search market snapshot

"People are overwhelmed at how crowded the Internet has become — Google says there are 30 trillion Web addresses, up from 1 trillion five years ago — and users expect their computers and phones to be smarter and do more for them. Many of the new efforts are services that people do not even think of as search engines.
Amazon, for example, has a larger share than Google of shopping searches, the most lucrative kind because people are in the mood to buy something. On sites like Pinterest and Polyvore, users have curated their favorite things from around the Web to produce results when you search for, say, “lace dress.”"

As Web Search Goes Mobile, Competitors Chip at Google’s Lead - NYTimes.com