Some of the speaker’s friends had left the social media site.

The speaker tells us which political party she supports

The speaker wrote a book called The Filter Bubble

A website can decide which information you want to see.

Everybody sees the same adverts when they are online

A cookie can track your habits on a website

The speaker clicks more frequently on friends with the same ideas

The speaker tells us which political party she supports

Websites and apps sometimes monitor the way we use them.

Websites and apps sometimes monitor the way we use them.