Adler said the publishers group is well aware that it isn't the first to face the threat of the Internet's mixed blessings. In fact, he said, nothing scared publishers more than the fate of newspapers, which, it could be argued, have fared worse than anyone: Not only have they seen sites like Google use their content, they have felt the need to put their own content online free of charge. And just last week, Google announced that it was testing a new service called Google Base that would allow users to post classified-like listings of items for sale in a searchable Google database, an experiment with potential to cut into a key source of newspaper revenue that has already suffered at the hands of online rivals such as Craigslist.

