- From: Mukul Gandhi <gandhi.mukul@gmail.com>
- Date: Wed, 17 Aug 2011 19:10:34 +0530
- To: Jonathan Rees <jar@creativecommons.org>
- Cc: www-tag@w3.org
On Tue, Aug 16, 2011 at 1:00 AM, Jonathan Rees <jar@creativecommons.org> wrote: > It's possible that this is being used, but (a) Alan showed that there > is no need to check the User-agent header; what I saw can be done with > classical cookies and transclusion, (b) User-agent won't let the > advertisers tell browser instances apart, since you could have > multiple computers sending the same User-agent string on different > computers, all with the same IP address (thanks to NAT). If an > advertising service only checked User-agent it would have both > imprecise targeting (decreasing the value of the service) and a much > more serious privacy situation. Thanks for the explanation. Sorry, that I missed you were talking about browser instances and not browser vendors (that's what I thought initially, while I wrote my previous mail). -- Regards, Mukul Gandhi
Received on Wednesday, 17 August 2011 13:41:21 UTC