Whatdoesitmeanto“poke”someoneonFacebook?Isitflirty,friendly,orevenannoying?Theanswerisalloftheabove,andsomehow,noneatall.Theambiguousfeaturewaslargelyinvisibleformanyyears,butnowFacebookisreportinga13xspikeinpokinginthelastmonth. “THEPOKEISHAVINGAMOMENT,”saidFacebookinallcapsonThreads.“There’sbeena13xspikeinpokingonFacebookinthepastmonth.So,behones...