B3 on www.ebay.co.uk
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Online advertising is the most common use of third party cookies. By adding their tags to a page, which may or may not display adverts, advertisers can track a user (or their device) across many of the websites they visit.
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As the name suggests, this type of cookie is saved on your computer so that when you close it down and start it up again, it can still be there.
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Analytics cookies are probably the most common form of persistent cookies in use today.
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