Answer: flamewar

AnswerCrossword Clue
FLAMEWARFierce online blogging battle
FLAMEWARLovers' quarrel, intensified?
FLAMEWARResult of provocative posters?
FLAMEWARNasty online argument
FLAMEWARWhat a troll may perpetuate
FLAMEWARSelf-centered Internet fight?
FLAMEWARDisruptive online event