Magnus – yes: just to be clear, this is not particularly challenging from a 
technical standpoint (EventLogging could be used for this purpose) and I also 
expect the volume of events to be low compared to page impressions, as clicks 
on external links are in general two steps away from a page visit (scroll to 
the bottom, click on the link).

The main concern is privacy and data retention, we would not be in a position 
to pipe this data to an external site, not even labs, and before data of this 
type can be collected, Legal would need to review the actual specifications, 
given its sensitivity.

Dario

On Feb 23, 2014, at 12:57 PM, Magnus Manske <[email protected]> wrote:

> FWIW, I once had some JavaScript added to the common JS script on Commons, 
> collecting anonymized clicks to external links on image pages, in an attempt 
> to give some stats to the GLAM community. That would fire off basic data like 
> time, page, and target URL to a toolserver logging script. Volume was low 
> enough, but I had to turn it off due to privacy paranoia soon after.
> 
> Cheers,
> Magnus
> 
> 
> On Sun, Feb 23, 2014 at 8:25 PM, Dario Taraborelli 
> <[email protected]> wrote:
> that’s correct: we do have aggregate entry/exit reports based on panel data 
> from comScore for all Wikimedia properties , but no exit data at the 
> individual article/link level. Raw request logs do not include this 
> information and for this data to be captured we would need to add ad-hoc 
> instrumentation in MediaWiki.  
> Dario
> 
> On Feb 23, 2014, at 11:29 AM, Oliver Keyes <[email protected]> wrote:
> 
>> To my knowledge we don't have that data (although I await being corrected). 
>> The only reader activity logs we keep are the RequestLogs, which show us how 
>> people come in and how they navigate within our ecosystem, but not how 
>> people come out.
>> 
>> 
>> On 23 February 2014 10:35, Jeremy Baron <[email protected]> wrote:
>> ---------- Forwarded message ----------
>> From: Strainu <[email protected]>
>> Date: Sun, Feb 23, 2014 at 6:11 PM
>> Subject: [Wikitech-l] Exit stats?
>> To: Wikimedia developers <[email protected]>
>> 
>> 
>> Hi,
>> 
>> Does Wikipedia have any exit or click-through stats, like what links
>> are the visitors following from an article? If yes, are those public?
>> 
>> Thanks,
>>   Strainu
>> 
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>> 
>> 
>> -- 
>> Oliver Keyes
>> Product Analyst
>> Wikimedia Foundation
>> _______________________________________________
>> Analytics mailing list
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>> https://lists.wikimedia.org/mailman/listinfo/analytics
> 
> 
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> 
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