Hacker News new | ask | show | jobs
by dereferenced2 5253 days ago
Pretty sure they do. Watch this ted talk about filter bubbling from last year: http://www.thefilterbubble.com/ted-talk

He mentions they use ~30 points of info to identify you, even if you're logged out.

1 comments

From the talk:

> Even if you're logged out, one engineer told me, there are 57 signals that Google looks at -- everything from what kind of computer you're on to what kind of browser you're using to where you're located -- that it uses to personally tailor your query results.

He says they are signals used during ranking, not something to identify people.