But now, that is all changing. We can still see all of that information ... sometimes. Things got a whole heck of a lot more complicated a little over a year ago, when Google introduced SSL encryption . What does that mean? It means Google started encrypting keyword data for anyone conducting a Google search while logged in to Google. So if you're logged in to, say, Gmail when you do a search, the keyword you used to arrive on a website is now encrypted, or hidden. So if that website drilled down into its organic search traffic source information, they'd see something like this:

Armed with this information, ecommerce marketers can learn why some sources might be underperforming or focus efforts on sources that drive better quality traffic. In some cases, this might mean relying less on search engines and more on social media or brand awareness. Other times the opposite could be the best course of action. Either way, the Traffic Sources section in Google Analytics can help.

The amount of dark social that comprises one's direct traffic is going to vary. For example, you might be diligent about incorporating tracking tokens into your email marketing campaigns, and asking your co-marketing partners to do the same when they promote your site content. Great. You won't have a huge chunk of traffic dumped into direct traffic that should really go into email campaigns. On the other hand, perhaps you're embroiled in a viral video firestorm, and a video on your site gets forwarded around to thousands of inboxes ... you don't exactly have control over that kind of exposure, and as a result you'll be seeing a lot of traffic without referral data in the URL that, consequently, gets bucketed under direct traffic. See what I mean? It depends.

Beyond organic and direct traffic, you must understand the difference between all of your traffic sources and how traffic is classified. Most web analytics platforms, like Google Analytics, utilize an algorithm and flow chart based on the referring website or parameters set within the URL that determine the source of traffic. Here is a breakdown of all sources: