Popular photo-sharing social media site/app Instagram has begun running advertisements, much to users' dismay.

"Seriously!!! I don't want ads in my feed!!!," wrote one user under an ad on Instagram, according to USA Today.

Fashion brand Michael Kors ran an ad for a watch on Instagram. Instagram will run more ads for various brands in the following weeks. If users don't like the ad that they see, they can tap the "..." below the image to hide it and provide feedback on why they don't like it.

Ads on Instagram are expected to bring in $340 million in revenue for Facebook.

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