According to it's own description on the Google Web store this extention tracks your web usage. Here is the exact language used
Note: When downloading one our free products you will join a global panel of users that help us measure and rank the web. This makes you part of an exciting and ambitious project to improve and expand the world’s knowledge about internet trends. To achieve this, we collect some anonymous data such us browsing patterns, trend statistics and how our features are used. Your browser will talk to our servers and help us improve our technology. You can find more details in our privacy policy.
By installing our product, you agree to the Terms of Service and to our Privacy Policy that can be found at:
http://addons-privacy.com/
We may collect results of your browsing preferences and habits...
and...
We may share some or all of your Personal Information with our subsidiaries, joint ventures or other companies under a common control that we have or may have in the future, providing such party undertakes to protect your privacy in accordance with these terms.
Extension Details
Browser - Chrome ID - jlioidldolgbmanndggdnldambdlglgj Link - https://chrome.google.com/webstore/detail/power-zoom/jlioidldolgbmanndggdnldambdlglgj/details
Rational
According to it's own description on the Google Web store this extention tracks your web usage. Here is the exact language used
Their linked privacy policy goes into even more alarming detail such as...
and...
It is also listed in How To Geeks' Article - Your Browser Extensions Are Spying On You