Data from 60 of Google's services will be shared between them - meaning Google account users, owners of Android phones and YouTube viewers will be subjected to even more intrusive 'personalised' adverts from now on.
Worried users are trading guides about how to protect sensitive private data such as search histories and the content of emails from Google's new all-encompassing advertising profiles. Mail Online's guide can be found here.
The new policy makes it easier for Google to combine the data of one person using different services such as the search engine, YouTube or Gmail if he is logged into his Google account.