...so it seems this was an 'issue' with Safari (i.e. DNT was on by default). I wasn't aware of that before.
A quick check of global browser market share at
http://www.w3counter.com/globalstats.php indicates that IE and Safari together account for around 40% of browsers (albeit various versions). Chrome is 28%. Firefox 23%.
As someone on this list has already pointed out, a huge amount of Google's revenues (e.g. AdSense product) rely on third party cookies. This is a major issue for them.
The other thing is Facebook. This is soon to be a huge problem for them too. They're now using Facebook data to target you outside Facebook:
On the face of it Microsoft's (and Apple's) position on DNT looks like a great way of disrupting the revenues of Google and Facebook provided IE and Safari can cling on to their browser market share and get serious numbers to upgrade to IE10 and newer Safari. That's a big 'if' given Chrome's rampant adoption. Perhaps Firefox will step up to the plate?
Sorry to bombard you all with a ton of links but there's so much interesting stuff going on in this space right now.
Cheers
Carlton
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Carlton Jefferis
+44 7900 212005
@CarltonJefferis
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