Mobile search ad clicks grew 230 percent in the past year, according to Performics.
Advertisers in the finance category spent 40 percent more on search ad clicks in March.
Technology giant's 27 percent growth was fueled by search and an emphasis on display and mobile.
Search giant follows Facebook's lead, allows users to recommend content and ads with "+1" button.
Advertisers continue to increase their spending on search advertising, driving up the price of CPC ads.
Google continues to attract more spend, despite Microsoft and Yahoo's search partnership.
Search ad prices rose across the board in December, year-over-year, as the market continues to grow.
Yahoo and Microsoft's Bing search alliance makes little progress since August.
U.S. average search CPC by category for July and August 2010, according to Efficient Frontier.
Nielsen and comScore disagree over Bing's recent growth in market share.
Search campaign platform integrates with Facebook and other channels.
The top search terms by search volume, according to data by Hitwise.
E-mail and instant messaging lost out to social networks, as users spent far more time on sites like Facebook and Twitter.
Company says alliance is more harmful to competition than proposed 2008 deal.
Automotive advertisers increased their spending on paid search ads by 13 percent in May.

June 6, 2012
1:00pm ET / 10:00am PT