About 56% of Facebook users who are aware of changes to the social network dislike them, according to a new poll.

A telephone survey of 2,000 people conducted by USA Today and Gallup found that 26% of people who use the site daily are “very concerned” about privacy vs. 35% who use it once a week. Those figures are significant in light of Facebook’s new Timeline feature, which gives users the opportunity to share their histories on the site and gives Facebook more targeted information for advertisers. Facebook’s schedule to roll out Timeline is unclear.