Question about some of the metrics in CWS analytics

[Anirudh Nimmagadda]

Hi all,

I was examining my extension's analytics, and noticed the following:

• Last 30 days installs: 94

• Last 30 days uninstalls: 10

• Last 30 days net-installs: 84

• Daily active users (DAU) from 30 days ago: 58

• DAU today: 75

• ΔDAU: 17

The analytics page specifies that a browser counts as an "active user" whether the extension is enabled or disabled (ref. attached screenshot), as long as it "loads" the extension in the relevant time period - 7 days if calculating weekly-active users, and presumably 1 day if counting DAU.

This brings me to my question: why is there such a large gap between net-installs and ΔDAU? I would have assumed these numbers to be roughly the same.

Reasons I've considered:
1. Most of the installs are from bots on use-and-throw browsers
2. A lot of the "installs" are not real - i.e. a user clicks on the "Add to Chrome" button on the web store (and this contributes to the "installs" metric in CWS), but doesn't click "Accept" in the chrome's extension-install dialog that shows up immediately after.