Since DayZ 1.24, emotes are logged to the admin log (*.adm). Example:
11:20:32 | [emote] SurvivorM_Taiki:0:INSTANCETYPE_SERVER play emote id=40 IH=null
This carries little to no useful information and just adds noise to the log. Please consider limiting these log entries to DIAG or maybe even DIAG_DEVELOPER.