Good question. I think we'd need to log this origin side, and look at
percentage usage on mdot in general and usage percentage on mdot for
Wikipedia Zero and see the results and see if there's any measurable
difference.

Is it safe to add this data point via MobileFrontend's existing
DOMParse wfDebugLog call? Or should we add an additional wfDebugLog
statement right below it?

As an aside, I noticed that of the 1% of "pageviews" on Wikipedia Zero for
Special:MobileOptions, three-fourths are GETs and one-fourth are POSTs
(POSTs seem to be issued irrespective of JavaScript support if the user
hits "Save"). As "Images (On|Off)" is the only option currently shown on
Wikipedia Zero for users who get to Special:MobileOptions, we can somewhat
safely say that on a given day we're talking an upper bound of maybe 500
users who (optionally) toggle the On | Off switch and (by implication) hit
"Save" on a given day. As to whether the cookie persists, particularly in
the Off state, and whether that translates to a nontrivial number of
no-images pageviews, the origin-side logging will tell the fuller story, I
suppose.

-Adam


On Mon, Mar 3, 2014 at 11:12 AM, Jon Robson <[email protected]> wrote:

> Adam, I am interested in who uses the feature "Images" on
> Special:MobileOptions which sets a cookie disabling images. I'm not
> sure how page views to Special:MobileOptions is related. Is it
> possible to see % of page views where the "disableImages" cookie is
> set? This would give a better indication of how widely used this
> feature is....
>
> On Mon, Mar 3, 2014 at 11:06 AM, Adam Baso <[email protected]> wrote:
> > Based on the 20140302 W0 logfile it looks like Special:MobileOptions
> > constitutes about 1% of "pageviews" (not the bulletproof definition, but
> a
> > good enough one).
> >
> >
> > On Mon, Mar 3, 2014 at 11:04 AM, Tomasz Finc <[email protected]>
> wrote:
> >>
> >> We added it specifically for Zero back in the day. Should be easy
> >> enough to measure and get into a sprint.
> >>
> >> On Mon, Mar 3, 2014 at 10:35 AM, Jon Robson <[email protected]>
> wrote:
> >> > On this page - https://en.m.wikipedia.org/wiki/Special:MobileOptions-
> >> > it is possible to disable images across the mobile site.
> >> >
> >> > How many people actually use this (outside Zero)? Can we get some
> data?
> >> >
> >> > I personally think we should explore killing this feature as an option
> >> > and leave it to the browser to take care of...
> >> >
> >> > _______________________________________________
> >> > Mobile-l mailing list
> >> > [email protected]
> >> > https://lists.wikimedia.org/mailman/listinfo/mobile-l
> >>
> >> _______________________________________________
> >> Mobile-l mailing list
> >> [email protected]
> >> https://lists.wikimedia.org/mailman/listinfo/mobile-l
> >
> >
>
>
>
> --
> Jon Robson
> * http://jonrobson.me.uk
> * https://www.facebook.com/jonrobson
> * @rakugojon
>
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