Every time you browse, you leave a trail of digital crumbs that companies use...

https://telegra.ph/What-Is-a-Passive-Digital-Footprint-And-Why-Youre-Leaving-Them-Everywhere-04-15

Every time you browse, you leave a trail of digital crumbs that companies use to build a profile on you. Think of your digital footprint as your online shadow. To slim it down, start by clearing your browser cache and cookies regularly