"Each time a photo is uploaded to the site, it loses some quality—but the effect isn't really obvious the first time, or the second time, or even the third time around. 90 screenshots and reposts later, however, the resulting blob of desaturated image artefacts is a stark visual representation of just how limited technology can be."
Beckett Mufson in This Is What Happens When You Repost an Instagram Photo 90 Times