I personally think that I leave an huge data trail with my use of Netflix. I watch it a lot and I feel like it would accumulate quickly. I also use Facebook and Snapchat regularly and assume that this leaves a trail. Between all the pictures, status updates, and page likes, these things are never deleted and pretty much stay there consequently leaving a data trail. Snapchat also leaves 24 hour trails if you post to your story.  As far as school goes, I use Google Docs and my online homework websites very regularly. Also, having an ePortfolio page, I assume, leaves quite a large data trail. I also think that the internet knows my interests and likes. For example, I had Googled Crocs, and shortly after there was an ad on my Facebook feed about Crocs. This happens very regularly. I have even noticed that it happens on my phone if I talked about a product, but never searched it. This is crazy to me because essentially our cellular devices are listening for opportune times to present products to us to encourage purchasing. This must be how companies make so much money. By using people’s data trail to customize ads ultimately caters to the customer and makes it easier to find what they want because the company already knows.