According to the Wikipedia article: "People with BPD feel emotions more easily, more deeply and for longer than others do."
To me that doesn't seem like the LW crowd, what would make you think that there's an overrepresentation?
Because it's a group of people who are excited for years about a rule for calculating conditional probability?
Yeah, I'm not serious here, but I will use this to illustrate the problem with self-diagnosis based on a description. Without hard facts, or without being aware how exactly the distibution in the population looks like, it's like reading a horoscope.
Do I feel emotions? Uhm, yes. Easily? Uhm, sometimes. More deeply than others? Uhm, depends. For longer than others? I don't have good data, so, uhm, maybe. OMG, I'm a total psycho!!!
You know the drill - If it's worth saying, but not worth its own post (even in Discussion), then it goes here.