
As mentioned earlier, ads aren’t going to be attached to user-made content. What you and your friends share will remain ad-free. But once you dive into the Discover section on Snapchat, you’ll start seeing spots that have been paid for. Many services do this, and thus Snapchat doesn’t deserve too much criticism. Snap needs to make money, after all.
Some of the ads currently running on Snapchat are for the Samsung Galaxy S9, Deadpool 2, and Tag. Snapchat shows full-screen ads with a label in the bottom-right indicating its paid content, and in the top-left you’ll see the name of the product or service along with minor details.
Article source: https://www.technobuffalo.com/2018/05/15/snapchat-unskippable-ads/