Google recently announced some big privacy changes for its internet browser Chrome. It’s planning to make obsolete what are known as third-party cookies. Cookies are the trackers that advertisers plant so when you shop for shoes one time, you’ll then see ads for them … forever. It’ll also put a limit on the amount of data websites can collect. Other browsers have already made moves to cut tracking and preserve privacy, but what Google does might be significant in that it may change the way the whole web works.