Google has teamed up with iPrint.com to offer free Google Profile business cards to the first 10,000 people who claim them. Each person can get a set of 25 cards that shows the Google.com home page with his/her Google Profile URL underneath it in green.
If you’re logged in to your Google account, you should see the offer available at the top of your profile. It can also be accessed here:
The offer is only available in the continental U.S., and Google says the cards should arrive within 10-12 days. You’ll have to create an iPrint.com account to place the order, or login to an existing account with them if you have one.
Postscript: Some have reported 404 errors trying to reach that page. It appears that you need to ensure your account is public, otherwise you’ll get an error.