Privacy Policy uses log files. The information stored in these log files are:

your IP address,
your user agent (which may show which browser and/or operating system you are using),
a timestamp of when you visited

no personally identifiable information is stored in these logs.

Google Analytics makes use of Google Analytics.
Google Analytics record information about visitors such as:

What website you came from to get to,
how long you browse,
what country your IP adress is associated with.

What does GTDev do with this data?

The information collected helps GTDev understand what kind of people visit and which pages they interact with.
This helps GTDev improve by focusing on the content which the visitors interact with.
If you wish to opt-out of Google Analytics, you can install the Google Analytics Opt-out Browser Add-on.