Google started Click-to-call Advertising Trial
New click-to-call ads can put customers on the phone with you the moment they see your Google ad.
Web users click your ad and enter their phone number. We call them instantly and put them on the line with your business or call center. You pay only when a call is made, at the price you set — no long distance or other phone charges.
click-to-call ads participate in the same AdWords auction as text ads, and receive the same ad discounting benefits.
Ads are ranked according to price and quality score, as always, so you may not see your click-to-call ads serve for every query. For more details visit google adwords site
If you are interested in publishing ads with google contact WebCreationz - Kerala Web Designing for a free consultation.