trolling

You use this word in an unconventional way, i.e., you use it to mean something like 'unfairly causing harm and wasting people's time', which is not the standard definition: the standard definition necessitates intention to provoke or at least something in that vein. (I assume you know what "trolling" means in the context of fishing?) Because it's only ever used in sensitive contexts, you might want to put effort into finding a more accurate word or phrase. As User:Eugine_Nier noted, lately "troll" and "trolling" have taken on a common usage similar to "fascist" and "fascism", which I think is an unfortunate turn of events.