Facebook is currently testing more than 60 versions of its navigation bar, the small icons on the bottom of your mobile screen. According to designer Luke Wroblewski — who gathered the data with the help of Twitter users — the navbar has at least 66 variations: if anyone (other than me) is still counting… now at 66 active versions of Facebook’s mobile nav: https://t.co/Rw5VqPeP2d pic.twitter.com/mNCpGCuFS6 — Luke Wroblewski (@lukew) October 17, 2017 Facebook seems to be A/B testing its app with a ton of users. I’ve already gone through a few different navbars in the last couple of months, and…

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