A cookie can track your habits on a website

The speaker clicks more frequently on friends with the same ideas

The speaker wrote a book called The Filter Bubble

The speaker tells us which political party she supports

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

A website can decide which information you want to see.

Everybody sees the same adverts when they are online

The speaker clicks more frequently on friends with the same ideas

Websites and apps sometimes monitor the way we use them.

The speaker wrote a book called The Filter Bubble