I guess this would count as really mild trolling because the stories aren't always dramatic, though they sometimes are. What about someone who seems to have a *lot* of the same kind of issue, and always with a type of person/situation they are kind of 'against'? If someone came across like they really were not fans of elephants, say. And they seem to run into really, an inordinate amount of issues involving elephants in some way, and often really extreme ones. It's sometimes hard not to say 'wow, you sure run into a lot of rude elephants..' Instead of these stories seeming meant to get attention or sympathy, they seem more about trying to make an anti-elephant point. I generally just ignore these posts because taken individually they're fine, though.
(Sorry for my silly example, I couldn't think of a more sensible one!)
It's difficult, but I do believe it's best to ignore those. I figure this is one of three things:
1. The poster meets an inordinately high amount of rude elephants.
2. The poster is doing something rude herself, causing the elephants to be rude in return.
3. The poster is an elephant-hating troll who is here to stir up trouble.
I personally hate when I read those threads and I see all of the sympathetic comments about the horrible rude elephants. I want to shout at the computer, "She's playing us! She's playing us all! Quit feeding her!" But then I realize I'd be yelling at a computer.
The mods are quite adept at figuring out the No. 3 types. Give it time and they usually trip up themselves.
ETA that sometimes I play my own little game. If someone posts a thread about elephants, I will bet myself that Elephant Poster will weigh in within 10 responses, or something like that. I often win that bet.