When it comes to Google Analytics, there are four main mediums that are considered defaults: organic, CPC, email, and referral. However, there are a few other mediums that can be tracked as well, such as social or display. While these aren't technically default mediums, they can still provide valuable insights into your traffic patterns and how people are finding your site. So if you're curious about what else is out there, here's a quick overview of some of the other possible mediums you could track in Google Analytics. First up is social media. While this one isn't technically a default medium either, it's become increasingly popular in recent years as a way to drive traffic to websites. If you want to track social media traffic in Google Analytics, you'll need to set up some custom goals or use URL tagging. Once you've done that, you'll be able to see things like which social networks are sending the most traffic your way and what kind of conversion rates you're getting from each one. Another option is display advertising. This includes banner ads and other types of visual advertising that people might see when they're browsing the web. Again, tracking this in Google Analytics requires setting up custom goals or URL tagging. But once you've done that, you'll be able to see how effective your display ads are at driving traffic and generating leads or sales. Finally, there's email marketing. This is another form of marketing that can be tracked in Google Analytics using custom goals or URL tagging. Email campaigns can be a great way to drive traffic to your website or promote specific products or services. By tracking them in Google Analytics, you'll be able to see how many people click through from your emails and make a purchase or take some other desired action on your site.