The company is running expandable mobile ads that encourage users to sign up for its Google Offers program. The initiative is a great way for Google to build up its mobile database and get more consumers who are interested in the company’s deals service.

Deal of the day
The expandable Google mobile ad reads “Google Offers beta. Deals on the best places to eat, shop and play in your city.”

Below that, there is a “sign up now” tab with a fingerprint.

Users are encourage to sign up for the service. When they press the tab, a push notification comes up that alerts users that in order to get daily deals, Google Offers would like to user their email address and ZIP code.

Users can opt-in to join Google Offers

Users can tap OK to let Pandora share their information.

From there, users can either tap No Thanks or OK.

If they opt-in, the expandable mobile ad turns into a banner ad that reads “Thanks for Signing Up.”

Users get this message when they opt-in

An initiative such as this is a great way for Google to get users to learn more about Google Offers and get them to opt-in in a seamless way.

Pandora already has information about consumers who are using its service.

Additionally, the Pandora iPhone app offers advertisers a way to run targeted mobile ad campaigns to better reach consumers.

Mobile offers
Over the past year, Google has been strengthening its Google Offers service.

Last year, Google Offers teamed up with Gilt Groupe’s local experience site Gilt City to offer its subscribers weekly deals on the company’s Web site, mobile app and email distribution list.

This is the first collaboration between Google and Gilt Groupe. The partnership lets Google Offers subscribers experience offers that are available to Gilt City members (see story).

Most recently, Google’s introduced an Android mobile application for Google Offers.

The Google Offers app enables users to discover, buy and redeem deals on the go. It also notifies users about offers that match their interests (see story).