Microsoft today announced an expansion of its Bing Rewards program, which makes it easier earn credits, track your credit balance, and redeem credits for rewards. Here are the details:

Starting today we’re pleased to share that we’ve integrated Bing Rewards into the Bing header for easy and quick access to earning credits and redeeming rewards. Bing Rewards is now available to users on Internet Explorer 7 or later and the latest versions of Firefox, Chrome, and Safari browsers. By expanding the ways to participate in Bing Rewards new members are no longer limited to using IE and the Bing Bar. Existing members can now sign in to Bing to continue earning credits when they are on a computer without the Bing Bar installed.

With Bing Rewards, members are exposed to all the great features Bing has to offer while earning credits that are redeemable for rewards. Offers notify members about free ways to earn credits, which could include searching on Bing, checking out new features, or learning about ways that Bing can help you make faster and more informed decisions. Offers and the number of credits you receive for completing them change regularly so make sure to click the Rewards button in the header to check out your latest earning opportunities.

As we’ve expanded the program, we’ve also added new rewards and ways to redeem the credits you earn. Rewards include a wide selection of gift cards (Amazon, Starbucks, Crate & Barrel and more), Microsoft Points for Xbox LIVE Marketplace, Xbox LIVE Gold subscriptions, charitable donations, Facebook Credits, Farm Cash for FarmVille, and sweepstakes entries for a trip to Hawaii, Xbox Kinect bundle and cash*. In the coming months we’ll be adding digital subscriptions for Zune Pass, Slacker Radio, and Gamefly.

We’re excited to bring Bing Rewards to an even broader audience with today’s announcement. Get started with Bing Rewards today!

And the duh moment, of course: Bing Rewards is only available to residents in the 50 US States and DC only.