Youtube/Snapchat Snapchat CEO Evan Spiegel.

Snapchat CEO Evan Spiegel announced Wednesday night at the Vanity Fair Summit that ads are coming soon to the app.

In an interview with Katie Couric, Spiegel said the ads would be incorporated in Snapchat's "Stories" feature, which lets users stitch together videos and photos into a slideshow of sorts.

Spiegel also said the ads would not be targeted and users will have the option whether or not they want to view the ads.

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