"I've been sucked in before by people like this and I don't appreciate becoming 'emotionally invested' in a thread only to find that it's all a lie"..
I've been noticing that response more...
Answering the question...I try to take things seriously (my whole world changed when the people around me talked about things I didn't previously believe in, and it's made my life better, and I've known people have the same thing happen after talking to me, so...), but I try to not get involved emotionally to the point where I'm worrying about them, etc.
But yes, I've noticed that response and it's odd to me. While wedding-planning, some people got very very involved with a planning journal (not here), and then suddenly the woman "died"...it was later figured out that "she" was not a she at all, but a he, and he had done the same thing on one, probably more, other message board...but this was something that dragged out for MONTHS, up to a year, not just a brief post.
I can understand being wary of being "burned", and therefore stay away from journals...but not b/c maybe possibly someone was lying about some situation at home that they've made one post about.