OK, so looks like I basically had the correct interpretation, except that people apparently do use it sincerely sometimes. I didn't know that it came from 12-step meetings - that's an interesting point, Marky9. I wonder if this is where the sarcastic meaning came from? That is, the person saying "thanks for sharing" implies that what you said would have been appropriate only in a 12-step meeting. If so, it's even more mean-spirited than I thought.
Fnord wrote:
FMX wrote:
How do you interpret the phrase "thanks for sharing", when said in response to a story, statement of opinion, etc.? ...
I use it to acknowledge a post that is whiny, long ("tl:dr"), hard to read, or completely off-topic.
And why do you find that preferable to:
1) Simply not replying (which, after all, takes less effort)?
2) Replying with a short, but more specific reaction such as "too whiny", "too long", "too hard to read" or "off-topic" (which probably takes about the same amount of effort, but is more helpful)?