Advertisers want more demographic data and less complexity from search engines, they told Google and Yahoo during this week's Search Engine Strategies 2005 conference, according to DM News (via MediaBuyerPlanner). Both Google and Yahoo claimed that while they understood those concerns, the need for more data had to be balanced against user privacy.

As for the complexity issues, answers from search engine representatives were complex themselves.

"A lot of these features require a little more work, but a lot are more simple, and the effort is usually worth it," said David Fisher, director of AdWords at Google.

Meanwhile, David Jakubowski, general manager of search strategy and go-to-market at MSN didn't feel he had to defend anything. "I suggest you sign up for the MSN pilot," he said. "I think you'll be very happy with the results."