On Sun, Aug 2, 2015 at 6:14 PM, Oliver Keyes <okeyes@wikimedia.org> wrote:

1. A common pattern in which queries, for no particular reason, had a
UNIX timestamp preceding them (example: "1436336857594:2019 FIFA
Women's World Cup"). This is responsible, on its own, for 3% of zero
results queries - and it appears to be caused by the Wikimedia Apps.

Oliver: What User Agent strings do you see for this? Is it the iOS or Android app, the old Phonegap App, or even something else?

-Bernd