We've made it easier to spread the word about AdSense with referrals, our newest feature. Not only can you connect friends, acquaintances, and complete strangers with AdSense, but you can generate more earnings in the process.

It's easy: Visit the new "Referrals" tab in your AdSense account.

Pick out a referral button, and add it to your site. Users who sign up for AdSense through your referral button will learn about a great product, and you'll have a new way to generate revenue - $100 when each user you refer first earns $100.

In addition, if you are a U.S. publisher, for Firefox with Google Toolbar referrals we will pay up to $1 per referral the first time a user installs Firefox. (We hope to make this available soon to international publishers.)

UPDATE: Firefox referrals are now available internationally.