Time is running out to clear your browsing history before Google's new privacy policies come into force.
In the past, data collected in the course of a web search would be kept separate from your YouTube viewing activity or your Google email usage and map queries.
But on Thursday the search engine giant will change the way it collects and collates data about its users, saying it is simplifying things and offering a better individual browsing experience.
It will also affect anyone with a smartphone using Google's android operating system.
Seamus Byrne, editor of consumer technology site CNET Australia, says Google will build a "much more intelligent picture of who you are".
"They'll target ads to you a lot better based on that information," he said.