Cookies are a mechanism created so web pages like ours can bring you their service and identify you securely. Without cookies, websites where you're able to signup and login simply wouldn't exist. Cookies aren't bad, but they can be used for dubious purposes, likes monitoring your activity through the pages you browse to learn about your habits, your tastes and the thinks you like so they can show you customized advertising. We don't do any of this.
We use some of the tools created by Google that allow us to provide you our services securely and adequately, like Google Maps, which we use in our Locations section, or Youtube and Vimeo, when we show in our pages a video that has been uploaded to those platforms.
You can set up the cookies you want to receive and the ones you don't want using the "Configure my cookies" option in the main menu.