I don't know the exact term for this but there is a way for websites to know where you've been surfing by using hidden links in the page to many other pages and checking if your browser marks them as "visited" or "new". [Link to an article by arstechnica mentionning this technique]
Now I like my browsing history, I like to scan it to find old articles and websites I visited, but I don't like Facebook or other websites scanning it to offer me better deals. Or just to steal information and draw a user profile. Is there a way to prevent this? If possible without killing the "visited" feature in my browser, or for just let them read the past 24 hours?