Ask. :) or failing, that, read around. Over a 15,000 active members, more than 65,000 discussions, & over a million posts to date.
My situation is pretty rare
One of the rarest of CritA traumas (statistically) is kidnap & ransom. Including all 4 major pieces / subgroups of that (abduction, hijacking, piracy, extortion) crisis management insurance groups estimate K&R numbers at 30,000 people per year. Which is a teeny tiny fraction of 1% (something like o.ooo6%) of all of the life threatening traumas / sexual violence that occur worldwide every year. But that's still
thirty thousand people this year alone. That's enough to fill a large sports arena. From one year, alone. Aaaaand I know of about half a dozen active members on this site who've directly dealt with abduction & detention.
That doesn't mean that every CritA trauma is going to be represented here in the forums. But so far? In my few years here, I have yet to read anyone whose trauma history didn't immediately remind me of at least a couple other members (even if they aren't active, their writings are still in the archive).
<grin> We're a pretty huge forum, and we specialize in one thing; PTSD. (In point of fact I believe we're the largest privately held PTSD resource on the web). While our numbers tend to reflect the stats you'll see out in the world (sexual violence & childhood trauma are the biggest slices of the pie here, as elsewhere), we don't have every other disorder or non-qualifying trauma diluting things further. You may not have found the stadium filled with K&R people, but you have found the medium sized town populated with very nearly every trauma history out there.