1. We use Google Analytics for analytical purposes. We use cookies to analyze user activity in order to improve our website. An example is that we look at at where our majority of users come from, how long they stay on our website, the bounce rate etc. 
We can use such analysis to gain insights about how to improve the functionality and user experience of our website. 

2. We may use cookies to store certain user preferences on our website. An example could be the recent searches you have performed in a cookie, in order for us to allow you to repeat those searches easily when returning to our website. 

Website users who don't want their data collected with Google Analytics can install the Google Analytics opt-out browser add-on. 
This add-on instructs the Google Analystics JavaScript (ga.js, analytics.js, and dc.js) running on websites to prohibit sending information to Google Analytics.To opt-out of Analytics for the web, visit the Google Analytics opt-out-page: https://tools.google.com/dlpage/gaoptout and install the add-on for your browser. 
For more details on installing and uninstalling the add-on, please see the relevant help resources for your specific browser.