No follow per Chrome e Firefox

La seguente app. gratuita per Chrome segnala i link no follow.

https://chrome.google.com/webstore/detail/nofollow/dfogidghaigoomjdeacndafapdijmiid

https://chrome.google.com/webstore/detail/nofollow-simple/apkcjkicpemmmakhhpbglcdlgphcjpae

La seguente app. gratuita per Firefox segnala i link no follow.

https://addons.mozilla.org/it/firefox/addon/nodofollow/

https://addons.mozilla.org/it/firefox/addon/hover-nofollow/