ACAP is a new publishing standard that allows Web site terms and conditions to be placed in machine-readable format so that publishers can have a say in how news aggregators and search engine companies use their content. Publishers worldwide have begun implementing it on their Web sites, and WAN last week again called on Google to embrace it. More on the protocol, a joint initiative of the European Publishers Council, WAN and the International Publishers Association, can be found at www.the-acap.org.

Schmidt said that ACAP, as currently specified, is incompatible with Google's proprietary search engine technology but that "we have some people working with them to see if the proposal can be modified to work in the way our search engines work."

Gavin O'Reilly, President of WAN and Chairman of ACAP, said: “We are pleased that Google CEO Eric Schmidt has said that they would be willing to implement ACAP if it were not for some technical incompatibility issues. As Mr. Schmidt knows, we have worked very closely with Google at a technical level throughout the past year in the ACAP project phase.

"Naturally, we are disappointed that we have yet to overcome their remaining technical barriers to ‘live’ implementation, but we have always stressed that we will do whatever is necessary to make ACAP work technically and seamlessly for all search engines. Our aspirations for ACAP have always been led by business needs and not by any preconceived technical solution," he said.

O'Reilly said Schmidt’s statement, reported in IT Wire, "is hugely reassuring. We really look forward to continuing to work with Google to do the necessary work to match our business requirements with their technical specifications and thus make it possible for Google to immediately adopt the ACAP protocol for the benefit of digital publishing worldwide.”