To promote the public profile pages, Google started to offer 250,000 free business cards in the US (the link only works in the US). "We are giving away 10,000 sets of 25 Google profile business cards totally free. Have a little fun and show off your profile," Google Suggests.

Google's business cards are less conventional, since they only include a search box pre-filled with your name and a link to your profile page. If you have a public profile that's searchable, Google will include it at the bottom of the search results page for your name.

Search Engine Land reports that Google uses Sprint's technology to print the business cards. "The offer is only available in the continental US, and Google says the cards should arrive within 10-12 days."
The idea is far from new, but the addition of an OneBox for profile search is a big incentive to create a profile and to manage your online reputation.