Many Mac users are fanatical about their computer and are willing to pay extra to own the brand.

Those same Mac users apparently also like to spend a little more on hotel rooms. The online travel agency Orbitz says Mac users spend as much as 30 percent more than PC users on the average hotel booking. The Wall Street Journal reports that the online travel service is showing Mac users more expensive properties.

Orbitz is experimenting with showing different hotel offers to Mac and PC visitors. The move is raising eyebrows and attracting front-page attention. The online travel agency is following a growing trend using predictive analytics to target potential buyers. Orbitz is quick to point out that both Mac and PC users can still rank hotels by price if they wish.

Companies used to just track what websites were being looked at, now they are tracking what computing system are being use.

Budget conscious Mac users should be cautious. Orbitz is likely to begin using the same algorithms to show rental cars and airline flights.

For PC users – especially those with broken hinges on their three-year-old laptop – expect to see more budget-friendly options on the front page of your online travel agency.