Google began its trial last August with technology magazines, allowing advertiser members of its Adwords keyword search auction programme to bid in auctions for print ad space in magazines such as Future's Maximum PC.
It has now started a new series of auctions in a greater range of magazines, including the 1.8m-selling Martha Stewart Living and Hachette Filipacchi's 500,000-selling ElleGirl.
Other participating publishers include Rodale, Primedia and Cnet. In total, Google is offering ads in six car titles, 11 lifestyle titles and 11 computing titles.
Advertisers have been given a deadline of February 20 to submit bids, and Google will help winners to get their copy to publishers.
If you have an opinion on this or any other issue raised on Brand Republic, join the debate in the .