You both seem to be saying the same thing - actively clicking on a like button g...

lifeisstillgood on Aug 28, 2015 | parent | context | favorite | on: “One billion people used Facebook in a single day”

You both seem to be saying the same thing - actively clicking on a like button gets counted as a real genuine user of Facebook. That seems reasonable (one is logged in, and clicks something sending data to FB)

Neither of you have said just having FB button appear on a 3rd party site counts - that would get what 3bn users :-)

aristus on Aug 28, 2015 [–]

I think so, rereading. But many people assume that simply visiting a page with a widget counts.