They remember our favourites setting when we visit a site and what we like to see first.

BBC: Beware the cookie monster: a new law aims to protect privacy

Here are five of our favourites.

BBC: Top five Istanbul cooking courses and food tours

But when we play in the Six Nations we're maybe not always favourites and sometimes that helps us raise our game.

BBC: SPORT | Rugby Union | Scottish | Chris Cusiter column

They are hot favourites to go up, but we will give it our best shot.

BBC: Steve Rhodes enthused by Worcestershire's young players