3 ms·
Among other things, they can tell you're reading wikipedia but not that you're reading about <controversial subject of the day>, and they can tell that you're b
by vertex-four 9y ago
Among other things, they can tell you're reading wikipedia but not that you're reading about <controversial subject of the day>, and they can tell that you're browsing youtube but not able to sell data that you watch PewDiePie every day. They're also prevented from messing with the data - providing incorrect information, blocking individual pages, and inserting advertisements.