You can sign up for Google Offers if you have Gmail account. It's not automatic so you'll have to do the work yourself. Google is now inviting members to sign up even for those cities that are not having any offers yet. Those who resides in Portland may start shopping!
The way it works? Similar to the other deals site like GroupOn, Yipit, Living Social and Bloomspot. Discounts are said to be some 50% or more. I wonder why Google is not doing it differently though. It seems like Google wants a share of the HUGE pie (especially since the company failed to buy out Groupon!) regardless! Anyhow, more competition is always good for shoppers!